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Ten rootstocks were evaluated in this NC-140 peach trial planted in 1984 at Kearney. Redhaven was the scion variety and the planting was maintained through the 1990 season. Rootstocks: Bailey Citation Damas 1869 GF 655/2 (St.
California did not participate in this rootstock trial that included 19 items planted in 20 locations. The selections focused on cold hardiness and did not include dwarfing stocks. These rootstocks have not shown much promise for California growers.
The 2001 peach rootstock planting included 8 single tree reps of 15 stocks. The trial was planted at Kearney with Red Top as the scion variety. It was removed after the 2006 season.
This trial included 8 trees each of only 8 rootstocks with Redhaven as the scion variety. It was planted in 2002 at Kearney and removed after the 2006 season. Rootstocks: Cadaman (Avimag) Empyrean 2 (Penta) Empyrean 101 (Adesoto 101) Krymsk 1 (VVA 1) Krymsk 2 (VSV 1) Lovell Mr.S.
This rootstock trial was planted in 2009 at the Kearney Ag Center with Redhaven as the scion variety. It has 8 single tree reps of each of the 15 rootstocks listed below. The same planting was established in 16 other locations within the USA.
The 14 nutrients listed on the right hand side of this page are generally considered the essential soil derived nutrients for all plants. The macro nutrients are needed in much greater quantities than the micro nutrients, but a deficiency in any one of them can cause serious problems.
The most common type of iron (Fe) deficiency in California is called iron chlorosis or lime-induced chlorosis. It is not caused by low iron but by high levels of bicarbonate ions (HCO3-) which frequently occur in high pH soils. Bicarbonate interferes with the uptake and use of iron by the plant.
Manganese deficiency is seldom a problem in stone fruit orchards in the San Joaquin Valley of California (survey). In a cool spring, mild symptoms can be seen on some leaves. These usually disappear as soon as the weather warms up.
Most commercial plum varieties in California require pollen from another variety to set a full crop. Thus, a second variety needs to be planted in the orchard or grafted into trees of the main variety. Beehives also need to be placed in the orchard during bloom.
Many things should be considered when planning a new orchard. Variety, rootstock, training system and planting spacing all need to be decided well ahead of time.
