Effect of potassium application on wheat (<i>Triticum aestivum</i> L.) in old Himalayan Piedmont Plain

Abstract

A field trial was conducted in Rabi season 2001-2002 at the Bangladesh Agricultural Research Institute’s Agricultural Research Station (BARI ARS) farm, Thakurgaon to evaluate a higher dose of K (66 kg K/ha) for maximizing yield of wheat and sustain soil native K level for wheat in north-western (NW) region of Bangladesh. To accomplish the objective, three levels of K (T1 = K0, T2 = K66, and T3= K38 (Farmers' practice) were tested. T1= K0 and T2 = K66 were tested under soil test based (STB) N116 P15 S36 Zn1 B1.7 fertilization and these two treatments T1 and T2 were compared with the farmers' own fertilization practice N68 P24 K38 S16 Zn0B0 (T3). Results showed that the treatment (T2) i. e. K66 with STB dose produced the better yield of wheat (var. Protiva). The highest gross return of Tk. 35,610/- and the highest net-return of Tk. 30,479/- was obtained with the treatment T2 (STB). The dose of 66 kg K/ha for wheat growing in Old Himalayan Piedmont Plain (AEZ-1) was not adequate, and thus needs to be increased to maintain the soil K reserve, since there was an apparent negative balance of K in the soil with sole use of chemical fertilizers. The recommended P dose of 24 kg P/ha in wheat season created a positive balance of P. The STB dose for S and Zn @36 and 1 kg/ha, respectively, in wheat season created a positive balance of S and Zn in soil. Keywords: Potassium; fertilizer management; wheat; nutrient balance sheet. DOI: 10.3329/bjar.v35i2.5883Bangladesh J. Agril. Res. 35(2) : 207-216, June 2010

Yield and Nutrient Concentrations of Wheat Plants as Affected by the Interaction between Organic Manuers , Phosphorus and Potassium Fertilizers

“…The result revealed that K level had significant effect on yield and its components of wheat in 100% K might be due to the balanced accumulation of different nutrient elements in the grain resulting higher grain weight. This result is also in agreement with the findings of Mesbah (2009), Saha et al, (2010), Awon et al (2012), and Hamouda et al, (2015) who indicated that application of potassium fertilization had significant increasing effects on yield and its components of wheat plant (No. ofspikes character and yield of straw, grain and biological yield as well as 1000-grain weight) as compared with un-treated plants.…”

Nutrient use efficiency (NUE) of wheat (Triticum aestivum L.) as affected by NPK fertilization

“…Similarly, in other studies also, increasing fertilizer levels improved grain yields of wheat significantly [ 50 – 53 ]. Wheat yields were considerably greater when K @ 66 kg ha -1 was used compared to 38 kg ha -1 [ 54 ] while the highest wheat yield was observed with potassium @ 66 kg ha -1 [ 55 ]. Increased nutrient levels resulted in improved yield attributes, which led to a boost in wheat grain yield.…”

Nitrogen and potassium application effects on productivity, profitability and nutrient use efficiency of irrigated wheat (Triticum aestivum L.)

“…Bijay-Singh et al [ 26 ] reported that to a large percentage of area under rice-wheat system, very little or no fertilizer-K is being applied and therefore, most of it comes from K-reserves of the soil. There are many causes of low K use in farmers’ fields, such as the effect of K in vegetative crop growth is not very clear, K fertilizer are more costly than fertilizer-N, and sometimes it is not available in the local market [ 27 ].…”