Tag Archives: lime

Residual Effect of Lime Rate after Five Years and P Fertilizer Rates on Bread Wheat (Triticum Aestivum L.) Yield on Acidic Soil in Banja District, North Western Ethiopia (Published)

Soil acidity problem is one of the bottlenecks to improve crop production in high rainfall regions of Ethiopia in general and in Banja district particular. This study aimed to determine the residual effect of lime and P fertilizer on the acid properties of soils and to develop models whereby the change in acidity indicators of soils can be predicted as a result of lime application. The experiment was laid out in a randomized complete block design with three replications. Five levels of lime (0, 1.15, 2.3, 3.45, 4.6 t ha-1) and four levels of Phosphorous (0, 10, 20, and 30 kg ha-1) were combined in a complete factorial arrangement. The study was conducted for three consecutive years from 2015 to 2017 main cropping seasons at Banja district. Mean grain yield and yield components as affected by different levels of lime and phosphorus fertilizer. Analysis of variance showed that all limed treatments were higher mean values of grain yield and yield components relative to control plot (no lime and P) in all over combined cropping years.  Moreover, over year combined mean the highest grain yields (1115.9 kg ha-1), biomass yields (3591.2 kg ha-1), number of seeds per plant (21.54), plant height (64.50 cm) and spike length (5.24 cm) were recorded under 4.6 t ha-1 of lime application of plot. The lowest grain and biomass yields were recorded in control plots. However, over year mean 4.6 t ha-1 of lime application plot the grain yield and biomass yield of wheat were increased by (151.1%) and (123.3%) related to the control plot, respectively. Hence, lime application at the rate of 3.45 t ha-1 (150% of the lime requirement of the soils based on its exchangeable acidity) coupled with 20 kg ha-1 P fertilizer could serve as a reference to boosting wheat production in the study area and similar areas with possible re-liming of the soils in every five years.

Citation: Mesfin Kuma, Getachew Yilma and Musefa Redi (2022) Residual Effect of Lime Rate after Five Years and P Fertilizer Rates on Bread Wheat (Triticum Aestivum L.) Yield on Acidic Soil in Banja District, North Western Ethiopia, Global Journal of Agricultural Research , Vol.10, No.3, pp.13-23

Keywords: Acidic soil, Phosphorus, lime

Residual Effect of Lime Rate after Five Years and P Fertilizer Rates on Bread Wheat (Triticum Aestivum L.) Yield on Acidic Soil in Banja District, North Western Ethiopia (Published)

Soil acidity problem is one of the bottlenecks to improve crop production in high rainfall regions of Ethiopia in general and in Banja district particular. This study aimed to determine the residual effect of lime and P fertilizer on the acid properties of soils and to develop models whereby the change in acidity indicators of soils can be predicted as a result of lime application. The experiment was laid out in a randomized complete block design with three replications. Five levels of lime (0, 1.15, 2.3, 3.45, 4.6 t ha-1) and four levels of Phosphorous (0, 10, 20, and 30 kg ha-1) were combined in a complete factorial arrangement. The study was conducted for three consecutive years from 2015 to 2017 main cropping seasons at Banja district. Mean grain yield and yield components as affected by different levels of lime and phosphorus fertilizer. Analysis of variance showed that all limed treatments were higher mean values of grain yield and yield components relative to control plot (no lime and P) in all over combined cropping years.  Moreover, over year combined mean the highest grain yields (1115.9 kg ha-1), biomass yields (3591.2 kg ha-1), number of seeds per plant (21.54), plant height (64.50 cm) and spike length (5.24 cm) were recorded under 4.6 t ha-1 of lime application of plot. The lowest grain and biomass yields were recorded in control plots. However, over year mean 4.6 t ha-1 of lime application plot the grain yield and biomass yield of wheat were increased by (151.1%) and (123.3%) related to the control plot, respectively. Hence, lime application at the rate of 3.45 t ha-1 (150% of the lime requirement of the soils based on its exchangeable acidity) coupled with 20 kg ha-1 P fertilizer could serve as a reference to boosting wheat production in the study area and similar areas with possible re-liming of the soils in every five years.

Keywords: Acidic soil, North Western Ethiopia, P Fertilizer, Phosphorus, lime

ENHANCING NUTRIENT AVAILABILITY AND COFFEE YIELD ON ACID SOILS OF THE CENTRAL PLATEAU OF SOUTHERN RWANDA (Published)

Soil acidity is among the major constraints to coffee productivity in Southern Rwanda. An experiment was conducted in 2010 to evaluate lime effect on nutrient availability and cherry yield of Coffee Arabica L. grown on acid soils of Nyamagabe District. The experiment was set in a randomized completely bloc design with two lime treatments (0 and 1.25 t ha-1 Ca(OH2)) applied under eragrostis mulched and non mulched conditions. Results showed that lime increased soil pH and decreased aluminium saturation and enhanced nutrient availability with values varying from 2-35.9 ppm, 3.1-5.5 Cmol (+) kg-1 and 0.57-1.56 Cmol(+) kg-1 for available phosphorus, exchangeable Ca2+ and Mg2+, respectively. Moreover, interaction lime-mulch led to higher N content in the soil (0.19%) and higher cherry yield (8.5t ha-1) compared to the control (3.8 t ha-1). Cherry yield positively correlated with soil pH (r2=0.71), soil calcium (r2=0.56), soil magnesium (r2= 0.53), total N (r2=0.30), available P (r2=0.62) and negatively with aluminium saturation (r2=0.3). Application of lime in mulched coffee is recommended to improve nutrient availability and coffee yield on acid soils of Southern Rwanda

Keywords: Acid soils, Arabica coffee, cherry yield, lime