Response of lowland rice and common bean grown in rotation to soil fertility levels on a Varzea soil

1995 ◽  
Vol 45 (1) ◽  
pp. 13-20 ◽  
Author(s):  
N. K. Fageria ◽  
V. C. Baligar
10.5772/53209 ◽  
2012 ◽  
Author(s):  
Satoshi Nakamura ◽  
Roland Nuhu ◽  
Israel K. ◽  
Monrawee Fukuda ◽  
Mohammed Moro ◽  
...  
Keyword(s):  

2016 ◽  
Vol 8 (3) ◽  
pp. 92 ◽  
Author(s):  
Y. A. A. Molaaldoila ◽  
K. A. A. Al-Hakimi

<p class="Style">Production of common bean (<em>Phaseolus vulgaris</em> L.) is often limited by the low soil fertility (LF). Identification of common bean genotypes adapted to LF may be a feasible strategy to overcome the poor plant growth and production in NP-deficient soils. Eight bean genotypes samples/derived from International Center for Tropical Agriculture (CIAT) and three local common bean cultivars were eval­uated in low soil fertility (LF) and recommended fertilizers (RF) at three locations representing high (Mashwarah), medium (Shaban) and low (Al-Qaidah) rainy seasons at Southern Highland Region (SHR), Ibb, Yemen in 2011, 2012 and 2013 following a completely randomized block design, arranged as split plot with either (LF) or (RF) as the main plots and the genotypes as sub plots. Three replications were used. The LF plots was absolute control, it did not receive any fertilizer (LF) and in (RF) plots, it received only 34.5 kg N and 92 kg P<sub>2</sub>O<sub>5</sub> kg. The common bean genotypes varied in phenotypic, nutrient efficiency traits and low fertility tolerant indices. The genotypes G2381B, MIB-156, BFB-140, BFB-141 performed favorably under both (RF and LF) environments. These genotypes were associated with higher values of pod number/plant, seed number/plant and 100 seed weight and leaf area, root nodules mass, shoot mass and root mass, shoot mass, physiological, nutrients and recovery efficiency and geometric mean percent (GMP), mean percent (MP) and susceptible tolerant index (STI) and low values of agronomy efficiency, percent of reduction (PR), low fertility susceptible index (LFSI) and tolerant (TOL). The results also showed that high and significant positive correlation of low fertility yield (LFY) and recommended fertility yield (RFY) with seed number/plant and 100 seed weight, NP recovery and use efficiency, geometric mean percent (GMP), mean percent (MP) and susceptible tolerant index (STI) under LF or RF. These correlations indicates that direction selection for yield under LF or RF would result into improved LF tolerant genotypes. Using phenotypic, nutrient efficiency traits, low fertility tolerant indices and stability indices criteria, only G2381B, MIB-156, BFB-140, BFB-143 and BFB-144 showed high average of yields, with <em>b</em>-value of 1.00 and a very low standard deviation (s<sup>2</sup>d) approaching zero, low ecovalence value (W) and highly significant coefficient of determination (r<sup>2</sup>). However, the regression coefficients indicating stability (<em>b</em>’s) and residuals were highly correlated with slopes (r = 0.943; P &lt; 0.001) and coefficient of determination (r = 0.711; P &lt; 0.001) and equivalent value (r = 0.809; P &lt; 0.001), respectively. Thus the data collected from three locations x three years can be used to select low fertility tolerant (or ‘stable’) genotypes. Such low fertility tolerant genotypes would be better suited for poor farmers in the SHR-Ibb and other similar production regions in Yemen.</p>


2018 ◽  
Vol 69 (5) ◽  
pp. 488 ◽  
Author(s):  
Claudio H. M. da Costa ◽  
Antonio C. A. Carmeis Filho ◽  
Carlos A. C. Crusciol ◽  
Rogério P. Soratto ◽  
Tiara M. Guimarães

In tropical conservation agricultural systems, crop yield is limited by soil acidity and root-growth inhibition, especially under intensive crop rotation. This study evaluated the effect of surface applications of lime and phosphogypsum in improving soil fertility and crop yield in a tropical region. Four treatments were evaluated: control (without soil amendment); and application phosphogypsum (2.1 + 2.1 + 2.1 Mg ha–1), lime (2.7 + 2.0 + 2.0 Mg ha–1), and a combination of lime and phosphogypsum at the given rates, applied in 2002, 2004 and 2010, respectively. We evaluated the soil chemical properties, root development, plant nutrition, yield components and grain yield of 10 crops over 4 years using five species: maize (Zea mays), crambe (Crambe abyssinica), cowpea (Vigna unguiculata), wheat (Triticum aestivum) and common bean (Phaseolus vulgaris). Our long-term results demonstrate the benefits of surface liming in alleviating subsoil acidity, reducing Al3+ toxicity, improving availability of Ca2+ and Mg2+, and increasing accumulation of soil organic matter in all soil profiles at depths up to 0.60 m. For maize and crambe, adding phosphogypsum increased development of plants and reproductive structures, which increased grain yield. Phosphogypsum exhibited synergistic effects in association with lime for maize and common bean. Phosphogypsum did not have an effect on cowpea and wheat, whereas surface liming was essential to improve plant nutrition, grain yield and wheat grain quality. The combination of both soil amendments is an important tool to reduce the soil acidification process, resulting in the highest levels of Ca2+ and Mg2+ and the highest base-saturation values in the topsoil layers (0–0.20 m) over time. Our long-term results showed the viability of surface liming plus phosphogypsum for improving tropical soil fertility, which can reflect an increase in grain yield and contribute to the sustainability of agricultural systems under intensive land use in highly weathered areas.


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