Effects of Water Stress and Potassium on Quantity Traits of Two Varieties of Mung Bean (Vigna Radiata L.)

Abstract

Water stress is known as the major threat to reduced growth and yield of plants in arid and semi-arid regions. Potassium is one of the indicators of plant responses to water stress. To evaluate the impact of water stress and levels of potassium on yield and yield components of two varieties of mung bean (Vigna radiata) (promising lines VC6172 and Indian), an experiment in the form of split factorial, based on randomized complete block design with three replicates was conducted in 2011, at the research farm of Safi-Abad Dezfool, Iran (latitude 32°16’ N, longitude 48°26’ E and altitude 82.9 m above sea level) .Water stress in three levels: irrigation at 120 (no stress), 180 (moderate stress) and 240 (severe stress) mm evaporation from pan, were allocated to the main plots and potassium fertilizer at three levels (0, 90, 180 kg /ha) and two varieties of mung bean (promising line VC6172 and Indian) were allotted to the sub-plots. Results showed that water stress and potassium fertilizer significantly affect all traits. The highest grain yield (2093 kg /ha) was obtained from no stress treatment in the case of 180 kg /ha potassium. Total dry matter, number of pods and grain yield, were significantly different between the two varieties. The interaction between fertilizer and variety, on dry matter and grain yield and the interaction between irrigation and variety, on dry matter were significant. We conclude that use of potassium fertilizer can reduce the adverse effects of water stress.

Distribution of Nutrients in Snap Bean Plant Organs as Affected by N, P and K Fertilizer Levels

“…This due to snap bean is low in the fixation of atmospheric N conversely to other bean (Feleafel and Mirdad 2014). The same trend was observed with P and K applications as reported by Lad et al (2014), Fooladivanda et al (2014), Liu et al (2015) and Buriro et al (2015), they found that application of P and K fertilizers significantly increased growth and yield parameters of bean plant. It could be concluded that snap beans plants could not achieve a higher yield when the application of NPK more than excess of recommended rates.…”

Pengaruh Pupuk Kandang dan Pupuk Anorganik terhadap Berbagai Varietas Kacang Hijau di Tanah Masam

“…Pemupukan 84 kg TSP/ha pada tanah miskin P (8,5 ppm P dengan pH 8,1) meningkatkan hasil kacang hijau 0,58 t/ha dibandingkan tanpa pupuk TSP (Ali et al 2010). Pemupukan 90-160 kg K/ha meningkatkan hasil kacang hijau dari 1,88 t/ha (tanpa pupuk K) menjadi 2,51-2,70 t/ha (Fooladivanda et al 2014). Hasil kacang hijau 1,25 t/ha dicapai dengan pemupukan 124 kg DAP/ha dan 10 ton pupuk kandang/ha (Abbas et al 2011).…”

Teknik Budidaya Kacang Hijau pada Lahan Kering Beriklim Kering

“…Pertumbuhan dan hasil kacang hijau meningkat sejalan dengan peningkatan takaran pupuk K dari 20 kg/ha sampai 120 kg K/ha, dan optimal pada takaran 80 kg K/ha (Kumar et al 2014). Pemupukan 90-160 kg K/ha meningkatkan hasil kacang hijau dari 1,88 t/ha (tanpa pupuk K) menjadi 2,51-2,70 t/ha (Fooladivanda et al 2014). Pemupukan 84 kg TSP/ha pada tanah miskin P (8,5 ppm P dengan pH 8,1) meningkatkan hasil kacang hijau 0,58 t/ha dibandingkan dengan tanpa pupuk TSP (Ali et al 2010).…”

“…Menurut Aslam et al (2010), produksi biomas kacang hijau tertinggi 5,7 t/ha diperoleh dengan pemberian 12,5 t pupuk kandang/ha atau 38 kg P 2 O 5 + 6,25 t pupuk kandang/ha. Pemupukan 90-180 kg K/ha juga meningkatkan biomas kacang hijau dari 5,43 t/ha (tanpa pupuk K) menjadi 6,00-6,52 t/ha (Fooladivanda et al 2014). Pemupukan P dilaporkan meningkatkan biomas kacang hijau, dan sebaliknya dengan penggunaan asam humat (pupuk organik) (Bandani et al 2014).…”