Pistachio Nitrogen Uptake and Partitioning
Crops:
Almonds
Barley
Broccoli
Cauliflower
Citrus
Corn for Grain
Corn for Silage
Cotton
Grapevines
Lettuce
Pistachio
Rice
Strawberries
Tomatoes
Walnut
Wheat
Seasonal N Uptake
Nitrogen in pistachio trees during 'on' and 'off' years.
Before leaf-out, little N was taken up and the trees relied on
N remobilized from perennial tissue. In 'on' years,
approximately 30% of N was taken up during spring flush
(mid-March to late May) and 70% during nut fill. N uptake was
negligible between harvest and leaf senescence. In 'off'
years, the proportion of N taken up during spring flush was
slightly higher (Brown et al., 1995; Rosecrance et al., 1996).
Nitrogen Partitioning
Nitrogen distribution in 20-year old 'Kerman' pistachio trees.
Measurements were taken in September of an ‘on’ year
(Rosecrance et al., 1996).
Nitrogen Removed at Harvest
Nitrogen removed with harvested pistachios. The value
includes all nutrients removed in hulls, shells and kernels,
blank nuts and other non-marketable yield per 1000 lbs
marketable yield.
Links
References
Brown, P.H., Weinbaum, S.A., Picchioni, G.A., 1995. Alternate bearing influences annual nutrient consumption and the total nutrient content of mature pistachio trees. Trees 9, 158-164.
Rosecrance, R.C., Weinbaum, S.A., Brown, P.H., 1996. Assessment of nitrogen, phosphorus, and potassium uptake capacity and root growth in mature alternate-bearing pistachio (Pistacia vera) trees. Tree Physiology 16, 949-956.
Siddiqui, M.I. and Brown, P., 2013. Pistachio early-season sampling and in-season nitrogen application maximizes productivity, minimizes loss.
