Record Details

Responses of cowpea genotypes to indigenous rock phosphate application

CGSpace

View Archive Info
 
 
Field Value
 
Title Responses of cowpea genotypes to indigenous rock phosphate application
 
Creator Suzuki, K.
Fatokun, C.A.
Boukar, O.
 
Subject cowpeas
soil
field experiments
genotypes
rock phosphate
 
Description Cowpea [Vigna unguiculata (L.) Walp.] plays an important role in the livelihoods of the people of sub-Saharan Africa, but phosphorus (P) deficiency in soils is a serious problem that contributes to low productivity. This study was conducted to verify the efficiency of indigenous rock phosphate (RP) as a P source to promote this affordable method of soil management to farmers. Pot experiments were conducted to identify good responder genotypes to RP application and its effect in cowpea cultivation using low-P soil from Fashola village in southwestern Nigeria and Togolese RP (34% P2O5). Shoot dry weight (SDW) at 8 wk after seeding (WAS) was significantly correlated with P uptake (r = 0.817; P < 0.01) and was therefore used as an indicator to select good responder genotypes. Sixteen of the 28 tested genotypes showed a low rate of decrease of SDW at 8 WAS under Togolese RP applications of 171 mg P kg–1 compared with 30 mg P kg–1 (as KH2PO4). Seven of these genotypes (Iron bean, IT87D-941–1, IT97K-499–38, DanIla, IT95K-1543, IT97K-556–4, and IT90K-284–2) showed a significantly higher SDW at 8 WAS compared with IT97K-499–35. In four of the seven good responders, the SDWs at 8 WAS were significantly higher and grain yield tended to be higher with ≥57 mg P kg–1 compared with zero application. Under field conditions, the micro-dosing technic is recommended for applying RP to avoid loss and to enhance the availability of P for cowpea cultivation.
 
Date 2018-09
2018-08-15T08:30:13Z
2018-08-15T08:30:13Z
 
Type Journal Article
 
Identifier Suzuki, K., Fatokun, C. & Boukar, O. (2018). Responses of cowpea genotypes to indigenous rock phosphate application. Agronomy Journal, 110(5), 1-14.
0002-1962
https://hdl.handle.net/10568/96557
https://doi.org/10.2134/agronj2017.09.0568
BIOTECH & PLANT BREEDING
NUTRITION & HUMAN HEALTH
 
Language en
 
Rights Limited Access
 
Format 1-14
 
Publisher Wiley
 
Source Agronomy Journal