County Range Files
- A Three Year Range Fertilization Trial Using Cows and Calves to Measure Production
- Annual Report Mendocino County 1964
- Annual Ryegrass- Stocker Trial
- Beef Cattle Rate of Gain Trial Range Improvement
- Beef Roundup
- Black Butte Field Evaluation Planting
- Cattle Ranching in Lassen County, California
- Curing Standing Range Forage with Herbicides
- Effect of Applied Sulfur on Yield and Sulfur Uptake of Various California Dryland Pasture Species
- Environmental Loading Rates of the Waterborne Pathogenic Protozoa Cryptosporidium parvum in Certain Domestic and Wildlife Species in California
- Fertilization of Non-irrigated Pasture Land
- Fertilized Range Wrigley Ranch Tehachapi SCD
- Gill Range Fertilization Trial
- Greenar Wheatgrass Hay Stage of Harvest Study
- Livestock Notes
- Meat Production on Fertilized Irrigated Pasture
- Nitrogen Fertilizer Boosts Beef Yields
- Pasture Experiments
- Plant Nutrition Reports 1963-1968
- Plant Tissue Analysis
- Progress Report No. 1 on Project No.101
- Range Fertilization at Intermediate Elevations
- Range Fertilization Trials Orange County
- Range Improvement
- Report of Plant Tissue Analysis Feed Quality
- Results of Nine Years of Meadow Fertilization in Modoc County
- Summary of 1967 Yield Data Del Norte County
- Supplementation of Dry Annual Range by Irrigated Pasture
- The Nutritional Value of Range Forage and the Nutrient Requirements Range Livestock
- Time & Source of P & S: First Season Results - Madera County
- Time & Source of P & S: First Season Results - Mariposa County
- Time & Source of P & S: First Season Results - San Luis Obispo County
- Urrutia Test- Madera County
- Atrazine and Simazine Increase Yield and Quality of Range Forage
- Comparative Forage Values of California Oatgrass and Soft Chess
- Conversion of Fertilized Annual Range Forage to Beef Cattle Liveweight Gain
- Effects of Sulfur on Five Annual Grassland Species
- Gypsum and Elemental Sulfur as Fertilizers on Annual Grassland
- Hardinggrass for Reseeding
- Irrigated Pasture for Beef Heifers to Be Bred as Yearlings
- Leaching and Uptake of Nitrogen Applied to Annual Grass and Clover-Grass Mixtures in Lysimeters
- Nitrogen Carryover on Range
- Paraquat Curing of Seeded Dryland Pasture Species
- Perennial Irrigated Pastures. II. Average Daily Gain and Carcass Characteristics of Yearling Beef Steers on Irrigated Pasture Supplemented by Alfalfa Cubes
- Range Improvement in California by Seeding Annual Clovers, Fertilization and Grazing Management
- Refertilization of Rose Clover
- Rose Clover Yield and Quality
- Subclover Early Growth Responses to Levels and Placements of Superphosphate and Ammonium Nitrate
- Supplementation of a Dry Annual Range Simulating Roughage by Use of Irrigated Pasture
- California Soil Vegetation Survey
- Hydrologic Studies on California Brush Lands
- Hydrologic Studies on California Brush Ranges
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1957
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1958
- Suggested Procedure for Converting Madera County Dryland Grain Fields Into Annual Clover-Grass Pastures
Free Publications
- A Three Year Range Fertilization Trial Using Cows and Calves to Measure Production
- Annual Report Mendocino County 1964
- Annual Ryegrass- Stocker Trial
- Beef Cattle Rate of Gain Trial Range Improvement
- Beef Roundup
- Black Butte Field Evaluation Planting
- Cattle Ranching in Lassen County, California
- Curing Standing Range Forage with Herbicides
- Effect of Applied Sulfur on Yield and Sulfur Uptake of Various California Dryland Pasture Species
- Environmental Loading Rates of the Waterborne Pathogenic Protozoa Cryptosporidium parvum in Certain Domestic and Wildlife Species in California
- Fertilization of Non-irrigated Pasture Land
- Fertilized Range Wrigley Ranch Tehachapi SCD
- Gill Range Fertilization Trial
- Greenar Wheatgrass Hay Stage of Harvest Study
- Livestock Notes
- Meat Production on Fertilized Irrigated Pasture
- Nitrogen Fertilizer Boosts Beef Yields
- Pasture Experiments
- Plant Nutrition Reports 1963-1968
- Plant Tissue Analysis
- Progress Report No. 1 on Project No.101
- Range Fertilization at Intermediate Elevations
- Range Fertilization Trials Orange County
- Range Improvement
- Report of Plant Tissue Analysis Feed Quality
- Results of Nine Years of Meadow Fertilization in Modoc County
- Summary of 1967 Yield Data Del Norte County
- Supplementation of Dry Annual Range by Irrigated Pasture
- The Nutritional Value of Range Forage and the Nutrient Requirements Range Livestock
- Time & Source of P & S: First Season Results - Madera County
- Time & Source of P & S: First Season Results - Mariposa County
- Time & Source of P & S: First Season Results - San Luis Obispo County
- Urrutia Test- Madera County
- Atrazine and Simazine Increase Yield and Quality of Range Forage
- Comparative Forage Values of California Oatgrass and Soft Chess
- Conversion of Fertilized Annual Range Forage to Beef Cattle Liveweight Gain
- Effects of Sulfur on Five Annual Grassland Species
- Gypsum and Elemental Sulfur as Fertilizers on Annual Grassland
- Hardinggrass for Reseeding
- Irrigated Pasture for Beef Heifers to Be Bred as Yearlings
- Leaching and Uptake of Nitrogen Applied to Annual Grass and Clover-Grass Mixtures in Lysimeters
- Nitrogen Carryover on Range
- Paraquat Curing of Seeded Dryland Pasture Species
- Perennial Irrigated Pastures. II. Average Daily Gain and Carcass Characteristics of Yearling Beef Steers on Irrigated Pasture Supplemented by Alfalfa Cubes
- Range Improvement in California by Seeding Annual Clovers, Fertilization and Grazing Management
- Refertilization of Rose Clover
- Rose Clover Yield and Quality
- Subclover Early Growth Responses to Levels and Placements of Superphosphate and Ammonium Nitrate
- Supplementation of a Dry Annual Range Simulating Roughage by Use of Irrigated Pasture
- California Soil Vegetation Survey
- Hydrologic Studies on California Brush Lands
- Hydrologic Studies on California Brush Ranges
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1957
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1958
- Suggested Procedure for Converting Madera County Dryland Grain Fields Into Annual Clover-Grass Pastures
- "Acorn Calves" A Nonhereditary Congenital Deformity Due to Maternal Nutritional Deficiency
- California Beef-Production Data
- California Grasslands and Range Forage Grasses
- Digestion Experiments With Range Forages and Flax Hulls
- Efficient Use of Annual Plants on Cattle Ranges in the California Foothills
- Feeding Beef Cattle in California
- Feeding Cattle and Sheep on the Range and in the Feed Lot
- Important Range Plants: Their Life History and Forage Value
- Improving California Ranges
- Improving Cattle Distribution on Western Mountain Rangelands
- Rice "Strawlage": A Feed for Drought Induced Feed Shortages?
- Rice Strawlage
- Seasonal Changes in the Chemical Composition of Range Forage and Their Relation to Nutrition of Animals
- Stock-Poisoning Plants of California
- The Importance of Continuous Growth in Beef Cattle
- Utilization of Wild Oat Hay for Fattening Yearling Steers
- Vitamin-A Deficiency as Related to Reproduction in Range Cattle
- Why Consider Strawlage and the Challenges in Production
- Adaptability of tropical forages to California's Central Valley
- Correlation of degree-days with annual herbage yields and livestock gains
- Effectiveness of nutrient supplement placement for changing beef cow distribution
- Irrigated warm- and cool-season grasses compared in Northern California pastures
- Predicting peak standing crop on annual range using weather variables
- The Digestibility of Bur Clover as Affected by Exposure to Sunlight and Rain
- The Effect of Leaching on the Nutritive Value of Forage Plants
- Alfalfa Hay Quality leaf shatter loss greatest when hay is handled at low moisture content
- Early rains alter range forage
- Fertility studies reveal plant and soil needs
- Halophytes as a rangeland resource
- Influence of Variety and Cutting Stage on Oat Hay Yields
- Livestock Diet Utilization natural vegetation and cultivated feedstuffs should have favorable ratio to value of animal products they produce
- Modoc a new durum wheat for northern California
- Pear Pulp and Pear Molasses nutritional value for cattle and palatability to sheep tested in feeding trials with commercial products
- Phalaris "Staggers" in California
- Range fertilization in the Sierra Nevada foothills
- Reseeding Dry Range seedings of annual and perennial legumes and grasses successful
- Soil nitrate level best measure of ryegrass nitrogen needs in Imperial Valley
- Spread of Range Forage Plants practicality of seeding some types of range land through livestock under test in Fresno County
- Eight New Forage Plants
- Annual Rangeland Handbook Chapter 7: Livestock Production
- California Beef Production
- California Beef Production
- California Range Brushlands and Browse Plants
- Annual Range Forage Production
- Annual Rangeland Forage Quality
- Balancing Beef Cow Nutrient Requirements and Seasonal Forage Quality on Annual Rangeland
- California Guidelines for Residual Dry Matter (RDM) Management on Coastal and Foothill Annual Rangelands
- Establishing and Managing Irrigated Pasture for Horses
- Livestock Management During Drought
- Pears: An Alternative Feed
- Using Stage of Maturity to Predict the Quality of Annual Range Forage
- Drought-Related Poisoning and Nutritional Risks to Cattle
- Effects of Nitrogenous Fertilizers on California Range as Measured by Weight Gains of Grazing Cattle
- Farm Feeding Beef Cattle to Market Home-Grown Feeds
- Fertilization of Irrigated Pasture and Forage Crops in California
- Irrigated Pasture for Steers and Lambs
- Irrigated Pastures in California
- Nitrate Poisoning in Livestock
- Poisonous Hemlocks Their Identification and Control
- Production of Range Clovers
- Reproduction Difficulties in Range Beef Cattle
- Social Dominance in Range Cows and its Effect on Supplemental Feeding
- Stock Poisoning Plants of California
- Summer Pasture and Greenchop From Sudangrass, Hybrid Sudangrass, and Sorghum X Sudangrass Crosses
- Supplemental Feeding of Sheep Grazing on Dry Range
- Temblor Range Research
- Temblor Range Research Annual Report 1966-1967
- Temblor Range Research Annual Report 1967-1968
- Temblor Range Research Annual Report 1968-1969
- The Bressi Range Study Final Report
County Range Files, Free Publications
- A Three Year Range Fertilization Trial Using Cows and Calves to Measure Production
- Annual Report Mendocino County 1964
- Annual Ryegrass- Stocker Trial
- Beef Cattle Rate of Gain Trial Range Improvement
- Beef Roundup
- Black Butte Field Evaluation Planting
- Cattle Ranching in Lassen County, California
- Curing Standing Range Forage with Herbicides
- Effect of Applied Sulfur on Yield and Sulfur Uptake of Various California Dryland Pasture Species
- Environmental Loading Rates of the Waterborne Pathogenic Protozoa Cryptosporidium parvum in Certain Domestic and Wildlife Species in California
- Fertilization of Non-irrigated Pasture Land
- Fertilized Range Wrigley Ranch Tehachapi SCD
- Gill Range Fertilization Trial
- Greenar Wheatgrass Hay Stage of Harvest Study
- Livestock Notes
- Meat Production on Fertilized Irrigated Pasture
- Nitrogen Fertilizer Boosts Beef Yields
- Pasture Experiments
- Plant Nutrition Reports 1963-1968
- Plant Tissue Analysis
- Progress Report No. 1 on Project No.101
- Range Fertilization at Intermediate Elevations
- Range Fertilization Trials Orange County
- Range Improvement
- Report of Plant Tissue Analysis Feed Quality
- Results of Nine Years of Meadow Fertilization in Modoc County
- Summary of 1967 Yield Data Del Norte County
- Supplementation of Dry Annual Range by Irrigated Pasture
- The Nutritional Value of Range Forage and the Nutrient Requirements Range Livestock
- Time & Source of P & S: First Season Results - Madera County
- Time & Source of P & S: First Season Results - Mariposa County
- Time & Source of P & S: First Season Results - San Luis Obispo County
- Urrutia Test- Madera County
Journal Articles
- Atrazine and Simazine Increase Yield and Quality of Range Forage
- Comparative Forage Values of California Oatgrass and Soft Chess
- Conversion of Fertilized Annual Range Forage to Beef Cattle Liveweight Gain
- Effects of Sulfur on Five Annual Grassland Species
- Gypsum and Elemental Sulfur as Fertilizers on Annual Grassland
- Hardinggrass for Reseeding
- Irrigated Pasture for Beef Heifers to Be Bred as Yearlings
- Leaching and Uptake of Nitrogen Applied to Annual Grass and Clover-Grass Mixtures in Lysimeters
- Nitrogen Carryover on Range
- Paraquat Curing of Seeded Dryland Pasture Species
- Perennial Irrigated Pastures. II. Average Daily Gain and Carcass Characteristics of Yearling Beef Steers on Irrigated Pasture Supplemented by Alfalfa Cubes
- Range Improvement in California by Seeding Annual Clovers, Fertilization and Grazing Management
- Refertilization of Rose Clover
- Rose Clover Yield and Quality
- Subclover Early Growth Responses to Levels and Placements of Superphosphate and Ammonium Nitrate
- Supplementation of a Dry Annual Range Simulating Roughage by Use of Irrigated Pasture
- Adaptability of tropical forages to California's Central Valley
- Correlation of degree-days with annual herbage yields and livestock gains
- Effectiveness of nutrient supplement placement for changing beef cow distribution
- Irrigated warm- and cool-season grasses compared in Northern California pastures
- Predicting peak standing crop on annual range using weather variables
- The Digestibility of Bur Clover as Affected by Exposure to Sunlight and Rain
- The Effect of Leaching on the Nutritive Value of Forage Plants
- Alfalfa Hay Quality leaf shatter loss greatest when hay is handled at low moisture content
- Early rains alter range forage
- Fertility studies reveal plant and soil needs
- Halophytes as a rangeland resource
- Influence of Variety and Cutting Stage on Oat Hay Yields
- Livestock Diet Utilization natural vegetation and cultivated feedstuffs should have favorable ratio to value of animal products they produce
- Modoc a new durum wheat for northern California
- Pear Pulp and Pear Molasses nutritional value for cattle and palatability to sheep tested in feeding trials with commercial products
- Phalaris "Staggers" in California
- Range fertilization in the Sierra Nevada foothills
- Reseeding Dry Range seedings of annual and perennial legumes and grasses successful
- Soil nitrate level best measure of ryegrass nitrogen needs in Imperial Valley
- Spread of Range Forage Plants practicality of seeding some types of range land through livestock under test in Fresno County
- Eight New Forage Plants
County Range Files, Free Publications, Journal Articles
- Atrazine and Simazine Increase Yield and Quality of Range Forage
- Comparative Forage Values of California Oatgrass and Soft Chess
- Conversion of Fertilized Annual Range Forage to Beef Cattle Liveweight Gain
- Effects of Sulfur on Five Annual Grassland Species
- Gypsum and Elemental Sulfur as Fertilizers on Annual Grassland
- Hardinggrass for Reseeding
- Irrigated Pasture for Beef Heifers to Be Bred as Yearlings
- Leaching and Uptake of Nitrogen Applied to Annual Grass and Clover-Grass Mixtures in Lysimeters
- Nitrogen Carryover on Range
- Paraquat Curing of Seeded Dryland Pasture Species
- Perennial Irrigated Pastures. II. Average Daily Gain and Carcass Characteristics of Yearling Beef Steers on Irrigated Pasture Supplemented by Alfalfa Cubes
- Range Improvement in California by Seeding Annual Clovers, Fertilization and Grazing Management
- Refertilization of Rose Clover
- Rose Clover Yield and Quality
- Subclover Early Growth Responses to Levels and Placements of Superphosphate and Ammonium Nitrate
- Supplementation of a Dry Annual Range Simulating Roughage by Use of Irrigated Pasture
UC Publications
- California Soil Vegetation Survey
- Hydrologic Studies on California Brush Lands
- Hydrologic Studies on California Brush Ranges
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1957
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1958
- Suggested Procedure for Converting Madera County Dryland Grain Fields Into Annual Clover-Grass Pastures
- Alfalfa Hay Quality leaf shatter loss greatest when hay is handled at low moisture content
- Early rains alter range forage
- Fertility studies reveal plant and soil needs
- Halophytes as a rangeland resource
- Influence of Variety and Cutting Stage on Oat Hay Yields
- Livestock Diet Utilization natural vegetation and cultivated feedstuffs should have favorable ratio to value of animal products they produce
- Modoc a new durum wheat for northern California
- Pear Pulp and Pear Molasses nutritional value for cattle and palatability to sheep tested in feeding trials with commercial products
- Phalaris "Staggers" in California
- Range fertilization in the Sierra Nevada foothills
- Reseeding Dry Range seedings of annual and perennial legumes and grasses successful
- Soil nitrate level best measure of ryegrass nitrogen needs in Imperial Valley
- Spread of Range Forage Plants practicality of seeding some types of range land through livestock under test in Fresno County
- Eight New Forage Plants
- California Beef Production
- California Beef Production
- California Range Brushlands and Browse Plants
- Annual Range Forage Production
- Annual Rangeland Forage Quality
- Balancing Beef Cow Nutrient Requirements and Seasonal Forage Quality on Annual Rangeland
- California Guidelines for Residual Dry Matter (RDM) Management on Coastal and Foothill Annual Rangelands
- Establishing and Managing Irrigated Pasture for Horses
- Livestock Management During Drought
- Pears: An Alternative Feed
- Using Stage of Maturity to Predict the Quality of Annual Range Forage
- Drought-Related Poisoning and Nutritional Risks to Cattle
- Effects of Nitrogenous Fertilizers on California Range as Measured by Weight Gains of Grazing Cattle
- Farm Feeding Beef Cattle to Market Home-Grown Feeds
- Fertilization of Irrigated Pasture and Forage Crops in California
- Irrigated Pasture for Steers and Lambs
- Irrigated Pastures in California
- Nitrate Poisoning in Livestock
- Poisonous Hemlocks Their Identification and Control
- Production of Range Clovers
- Reproduction Difficulties in Range Beef Cattle
- Social Dominance in Range Cows and its Effect on Supplemental Feeding
- Stock Poisoning Plants of California
- Summer Pasture and Greenchop From Sudangrass, Hybrid Sudangrass, and Sorghum X Sudangrass Crosses
- Supplemental Feeding of Sheep Grazing on Dry Range
- Temblor Range Research
- Temblor Range Research Annual Report 1966-1967
- Temblor Range Research Annual Report 1967-1968
- Temblor Range Research Annual Report 1968-1969
- The Bressi Range Study Final Report
- Toxicity of Ornamental Plants to Domestic Animals and Livestock
- Yellow Starthistle: Biology and Control
- California Range Brushlands and Browse Plants
County Range Files, Free Publications, UC Publications
- California Soil Vegetation Survey
- Hydrologic Studies on California Brush Lands
- Hydrologic Studies on California Brush Ranges
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1957
- Range Management Investigations Demonstration Ranges Progress Report Year Ending December 1958
- Suggested Procedure for Converting Madera County Dryland Grain Fields Into Annual Clover-Grass Pastures
Free Publications, Journal Articles
- Adaptability of tropical forages to California's Central Valley
- Correlation of degree-days with annual herbage yields and livestock gains
- Effectiveness of nutrient supplement placement for changing beef cow distribution
- Irrigated warm- and cool-season grasses compared in Northern California pastures
- Predicting peak standing crop on annual range using weather variables
- The Digestibility of Bur Clover as Affected by Exposure to Sunlight and Rain
- The Effect of Leaching on the Nutritive Value of Forage Plants
Peer Reviewed Publications
- Alfalfa Hay Quality leaf shatter loss greatest when hay is handled at low moisture content
- Early rains alter range forage
- Fertility studies reveal plant and soil needs
- Halophytes as a rangeland resource
- Influence of Variety and Cutting Stage on Oat Hay Yields
- Livestock Diet Utilization natural vegetation and cultivated feedstuffs should have favorable ratio to value of animal products they produce
- Modoc a new durum wheat for northern California
- Pear Pulp and Pear Molasses nutritional value for cattle and palatability to sheep tested in feeding trials with commercial products
- Phalaris "Staggers" in California
- Range fertilization in the Sierra Nevada foothills
- Reseeding Dry Range seedings of annual and perennial legumes and grasses successful
- Soil nitrate level best measure of ryegrass nitrogen needs in Imperial Valley
- Spread of Range Forage Plants practicality of seeding some types of range land through livestock under test in Fresno County
- Annual Range Forage Production
- Annual Rangeland Forage Quality
- Balancing Beef Cow Nutrient Requirements and Seasonal Forage Quality on Annual Rangeland
- California Guidelines for Residual Dry Matter (RDM) Management on Coastal and Foothill Annual Rangelands
- Establishing and Managing Irrigated Pasture for Horses
- Livestock Management During Drought
- Pears: An Alternative Feed
- Using Stage of Maturity to Predict the Quality of Annual Range Forage
Free Publications, Journal Articles, Peer Reviewed Publications, UC Publications
- Alfalfa Hay Quality leaf shatter loss greatest when hay is handled at low moisture content
- Early rains alter range forage
- Fertility studies reveal plant and soil needs
- Halophytes as a rangeland resource
- Influence of Variety and Cutting Stage on Oat Hay Yields
- Livestock Diet Utilization natural vegetation and cultivated feedstuffs should have favorable ratio to value of animal products they produce
- Modoc a new durum wheat for northern California
- Pear Pulp and Pear Molasses nutritional value for cattle and palatability to sheep tested in feeding trials with commercial products
- Phalaris "Staggers" in California
- Range fertilization in the Sierra Nevada foothills
- Reseeding Dry Range seedings of annual and perennial legumes and grasses successful
- Soil nitrate level best measure of ryegrass nitrogen needs in Imperial Valley
- Spread of Range Forage Plants practicality of seeding some types of range land through livestock under test in Fresno County
Free Publications, Journal Articles, UC Publications
Manuals
- Annual Rangeland Handbook Chapter 7: Livestock Production
- California Beef Production
- California Beef Production
- California Range Brushlands and Browse Plants
- California Range Brushlands and Browse Plants
Free Publications, Manuals
Free Publications, Manuals, UC Publications
Free Publications, Peer Reviewed Publications, UC Publications
- Annual Range Forage Production
- Annual Rangeland Forage Quality
- Balancing Beef Cow Nutrient Requirements and Seasonal Forage Quality on Annual Rangeland
- California Guidelines for Residual Dry Matter (RDM) Management on Coastal and Foothill Annual Rangelands
- Establishing and Managing Irrigated Pasture for Horses
- Livestock Management During Drought
- Pears: An Alternative Feed
- Using Stage of Maturity to Predict the Quality of Annual Range Forage
Free Publications, UC Publications
- Drought-Related Poisoning and Nutritional Risks to Cattle
- Effects of Nitrogenous Fertilizers on California Range as Measured by Weight Gains of Grazing Cattle
- Farm Feeding Beef Cattle to Market Home-Grown Feeds
- Fertilization of Irrigated Pasture and Forage Crops in California
- Irrigated Pasture for Steers and Lambs
- Irrigated Pastures in California
- Nitrate Poisoning in Livestock
- Poisonous Hemlocks Their Identification and Control
- Production of Range Clovers
- Reproduction Difficulties in Range Beef Cattle
- Social Dominance in Range Cows and its Effect on Supplemental Feeding
- Stock Poisoning Plants of California
- Summer Pasture and Greenchop From Sudangrass, Hybrid Sudangrass, and Sorghum X Sudangrass Crosses
- Supplemental Feeding of Sheep Grazing on Dry Range
- Temblor Range Research
- Temblor Range Research Annual Report 1966-1967
- Temblor Range Research Annual Report 1967-1968
- Temblor Range Research Annual Report 1968-1969
- The Bressi Range Study Final Report
Priced Publications
- Toxicity of Ornamental Plants to Domestic Animals and Livestock
- Yellow Starthistle: Biology and Control
- California Range Brushlands and Browse Plants
Priced Publications, UC Publications
- Toxicity of Ornamental Plants to Domestic Animals and Livestock
- Yellow Starthistle: Biology and Control