บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

The effects of alternate bearing, soil moisture and gypsum on potassium nutrition of pistachio (Pistacia vera L.).

Zeng, D. Q., Brown, P. H. and Rosecrance, R. C.

Acta Horticulturae Year: 1998 Issue: No. 470 Pages: 412-420 Ref: 43 ref.

1998

บทคัดย่อ

The effects of alternate bearing, soil moisture and gypsum on potassium nutrition of pistachio (Pistacia vera L.).

A review of potassium nutrition in pistachios is presented and research perspectives in this area are discussed. Very limited information is available about K nutrition in pistachios. Recent studies indicate that K uptake and distribution are driven by fruit development, with the crop serving as a sink. K uptake occurs mainly during the nut-fill period, with little uptake during the spring vegetative flush and postharvest periods. K fertilization is found to be effective in increasing leaf K status, nut yield and quality. However, no guidelines for K fertilization exist and no generally accepted yield-based K diagnostic criteria have been developed. Further studies on K nutrition should be conducted in association with problems encountered in pistachio production, such as soil moisture regimes and nutrient interactions, in order to optimize the K fertilizer program.