scholarly journals Response of Green Beans to Acidity Factors in Six Tropical Soils

1969 ◽  
Vol 58 (1) ◽  
pp. 44-58
Author(s):  
Fernando Abruña ◽  
Raúl Pérez-Escolar ◽  
José Vicente-Chandler ◽  
Jacinto Figarella ◽  
Servando Silva
Keyword(s):  
Soil Ph ◽  
Soil Acidity ◽  
Ammonium Acetate ◽  
Manganese Content ◽  
Calcium Content ◽  
Tropical Soils ◽  
Green Beans ◽  
Base Content ◽  
Soil Aluminum ◽  
Intensively Managed

The effect of soil acidity factors on yields and foliar composition of intensively managed green beans was determined in Ultisols and an Oxisol typical of the Humid Tropics. Beans responded very strongly to liming on all six soils. Calcium content of the bean leaves increased and manganese content decreased with increasing lime rates and with yields. Bean yields increased with increasing soil pH to about 5.2 at which level these soils contained essentially no exchangeable aluminum. Bean yields increased with increasing exchangeable soil base content to about 70-percent saturation based on cation exchange capacities as determined with ammonium acetate at pH 7. Bean yields increased with decreasing exchangeable soil aluminum to essentially 0. Soil pH and exchangeable base and aluminum contents were effective criteria for liming these soils.

scholarly journals Response of Corn to Acidity Factors in Eight Tropical Soils

1969 ◽  
Vol 58 (1) ◽  
pp. 59-77
Author(s):  
Fernando Abruña ◽  
Raúl Pérez-Escolar ◽  
José Vicente-Chandler ◽  
Robert W. Pearson ◽  
Servando Silva
Keyword(s):  
Soil Ph ◽  
Ammonium Acetate ◽  
Aluminum Content ◽  
Calcium Content ◽  
Tropical Soils ◽  
Base Saturation ◽  
Base Content ◽  
Ph Values ◽  
Exchangeable Aluminum ◽  
Close Relationship

The effect of soil acidity factors was determined on yields and foliar composition of corn grown on Ultisols and Oxisols typical of the Humid Tropics. Soil pH values increased from about 3.8 with a base saturation of around 20 percent to about pH 5 with a base saturation of around 70 percent based on cation exchange capacities determined with neutral ammonium acetate. The low pH values in relation to exchangeable base contents are explained by the presence of free salts. The level of aluminum saturation of the soil based on exchange capacities as determined with ammonium acetate decreased from 40-percent at about pH 3.9 to 0 at about pH 5.2. The Ultisols had a high content of exchangeable aluminum when acid but the more weathered Oxisols contained little aluminum. A very close relationship exists between exchangeable base (Ca + Mg) and aluminum values based on total exchange capacities determined either with ammonium acetate at pH 7.0 or by the sum of cations at a given pH permitting conversion of one value to another. Corn responded strongly to liming particularly on the Ultisols which had high exchangeable aluminum content when acid. Calcium content of the corn leaves increased with soil base content and with yields but foliar composition was not otherwise affected by liming. Corn yields increased with pH to about 5.2 at which pH level these soils contained essentially no exchangeable aluminum, with exchangeable base content as determined with ammonium acetate to about the 70-percent saturation level, and with decreasing exchangeable aluminum in the soil to essentially 0. Soil pH, exchangeable base, and exchangeable aluminum content were effective criteria for liming these soils.

Effect of Soil pH and Related Acidity Factors on Yields of Sweetpotatoes and Soybeans Grown on Typical Soils of the Humid Tropics

1969 ◽  
Vol 61 (1) ◽  
pp. 82-89
Author(s):  
Raúl Pérez-Escolar
Keyword(s):  
Puerto Rico ◽  
Soil Ph ◽  
Soil Acidity ◽  
Humid Tropics ◽  
Soybean Yield ◽  
Base Content ◽  
Exchangeable Al ◽  
Soybean Leaf ◽  
Leaf N Content ◽  
Leaf N

The effects of soil pH and related acidity factors on the yields of sweetpotatoes, Miguela var., and soybeans, Jupiter var., were determined on typical Oxisols and Ultisols of Puerto Rico. The study revealed no significant effect of pH and acidity factors on the yield of the sweetpotato variety, which was quite tolerant to high soil acidity and exchangeable Al. Yields were similar to those obtained by other researchers who worked with other varieties. Soybeans, although relatively tolerant to high levels of exchangeable Al, were adversely affected when values surpassed 5.5 meq/100 g of soil in a clayey Ultisol. Exchangeable base content was directly related to soybean yield grown on a light textured Oxisol. Yields obtained are considered excellent. Highly significant correlations between soybean leaf N content and yield was found in the clayey Ultisol.

scholarly journals Effect of Soil Acidity and Liming on Yields and Composition of Sugarcane Growing on an Ultisol

1969 ◽  
Vol 52 (2) ◽  
pp. 85-100
Author(s):  
Fernando Abruña Rodríguez ◽  
Juan Juárez ◽  
Raúl Pérez Escolar ◽  
José Vicente Chandler
Keyword(s):  
Soil Ph ◽  
Soil Acidity ◽  
Sucrose Content ◽  
Soil Factors ◽  
Base Content ◽  
Exchangeable Bases ◽  
Fertilized Soil ◽  
Exchangeable Al ◽  
Humid Region ◽  
Exchangeable Aluminum

Variable liming and heavy fertilization of a Cialitos clay (ultisol) over a 7-year period markedly affected soil properties and yields of subsequently planted sugarcane. A total of 3,680 pounds of N, 480 pounds of P, and 2,870 pounds of K had been applied per acre to all plots over this period. Cane yields increased from less than 1 ton per acre, when no lime had been applied, to over 40 tons when a total of 20 tons of limestone had been applied per acre over the previous 7-year period. Yields increased with increasing exchangeable base content in the upper 6 inches of soil from less than 10 tons per acre when exchangeable bases dropped below 3 meq., to over 40 tons when exchangeable bases exceeded 8 meq./l00 g. of soil (58-percent base saturation). Cane yields increased with decreasing exchangeable Al from less than 10 tons, when exchangeable Al exceeded 8 meq., to over 40 when exchange able Al was less than 2 meq./100 g. of soil. Yields increased with increasing soil pH, but the presence of free salts in this heavily fertilized soil made pH an unreliable criterion for determining the need for liming. Applying 8 tons of limestone per acre to the surface of a very acid Cialitos clay before planting increased cane yields from an average of 12.4 to 34.5 tons per acre, and decreased exchangeable Al from 7.3 to 0.5 meq. per 100 g. of soil. The foliar composition at 9 months of age, and the sucrose content of the sugarcane were not affected by the soil factors studied, or by lime applications, and remained unchanged, at satisfactory levels, in plots yielding from almost 0 to over 40 tons of cane per acre. A survey showed that in many sugarcane soils of the Humid Region exchangeable aluminum exceeded levels that depressed cane yields on Cialitos clay in this experiment.

scholarly journals Effects of Liming and Fertilization on Yields and Foliar Composition of High-Yielding Sun-grown Coffee in Puerto Rico

1969 ◽  
Vol 49 (4) ◽  
pp. 413-428 ◽  
Author(s):  
Fernando Abruña ◽  
José Vicente-Chandler ◽  
Luis A. Becerra ◽  
Ramón Bosque Lugo
Keyword(s):  
Puerto Rico ◽  
Manganese Content ◽  
Acid Soils ◽  
Calcium Content ◽  
Soil Condition ◽  
Leaf Nitrogen ◽  
Climatic Conditions ◽  
Manganese Toxicity ◽  
Mountain Region ◽  
Intensively Managed

The fertility requirements of high-yielding, intensively managed sungrown coffee growing under favorable climatic conditions in the Mountain Region of Puerto Rico were studied. About 3,000 pounds of market coffee per acre yearly wore produced when fertilization was adequate. Coffee responded strongly to the apnlinf of 300 pounds of nitrogen and 300 pounds of potassium per acre yearly, in three equal applications. Leaf-nitrogen and -potassium contents of 25 to 3.0 percent were associated with high yields. Coffee did not respond to phosphorus or magnesium applications. The effects of liming on yields and foliar composition of heavily fertilized, high-yielding, sun-grown coffee and on soil condition were determined in experiments at two locations in the Mountain Region of Puerto Rico. Soil types on which liming is likely to be especially critical were studied by analyzing soil samples obtained throughout the Mountain Region. Liming had no significant effect on yields of coffee on either Alonso clay near Adjuntas or Los Guineos clay near Jayuya. Liming increased the calcium content and decreased the manganese content, but had no effect on the N, P, K, or Mg content of the coffee leaves. Liming increased soil pH and exchangeable-base content and sharply decreased the exchangeable-aluminum content of both soils. Both soils had a very low, easily reducible manganese content. Severe symptoms of manganese toxicity in intensively managed coffee plantations on soils with a high manganese content were corrected by liming. The soils of the Coffee Region of Puerto Rico fall into three groups as to likelihood of manganese toxicity becoming a problem with intensively managed coffee: Soils low in easily reducible manganese where toxicity of this element is not a problem; soils high in easily reducible manganese, but high in bases and low in acidity where toxicity of this element is not an immediate problem; and acid soils high in easy reducible manganese where toxicity of this element is likely to be an immediate and serious problem.

scholarly journals The Effect of Soil pH and Related Acidity Factors on Yield of Plantains (cv Maricongo) Grown on Los Guineos Clay, an Ultisol.

1969 ◽  
Vol 63 (1) ◽  
pp. 22-26
Author(s):  
Raúl Pérez Escolar ◽  
M. A. Lugo-López
Keyword(s):  
Soil Ph ◽  
Soil Acidity ◽  
Calcium Content ◽  
Yield Parameters ◽  
Plant Crop

The effect of soil pH and related acidity factors on yield and foliar composition of plantains (cv Maricongo) grown on Los Guineos clay, an Ultisol, has been determined in a plant crop and a first ratoon. In the former, only soil pH was correlated in a significant way with number of fruits per bunch, r = 0.47 with Y = 322.73 + 134.41x - 12.32x2, to predict this yield parameter at a particular pH in the range of 4.4 and 5.2. Leaf calcium content was related in a highly significant way (r = 0.70) with number of fruits per bunch. In the first ratoon, no significant correlations were measured between soil acidity indices and the yield parameters, nor between nutrients in the leaves and plantain yields. Plantain cultivar Maricongo seems to be highly tolerant to low soil pH and correspondingly high ionic aluminum.

Nutritional status of recently developed Makhana (Gorgon Nut) variety “Swarna Vaidehi”

2016 ◽  
Vol 3 (4) ◽  
Author(s):  
LOKENDRA KUMAR ◽  
ANIL KUMAR SINGH ◽  
B. P. BHATT
Keyword(s):  
Standard Procedure ◽  
Manganese Content ◽  
Zinc Content ◽  
Calorific Value ◽  
Calcium Content ◽  
Total Carbohydrate ◽  
Local Cultivar ◽  
Euryale Ferox ◽  
Nutritional Profiling ◽  
Maximum Moisture Content

Makhana is an important aquatic, annual and seed propagated crop with gigantic floating leaves. It is known as Gorgon nut (Euryale ferox Salisb) belongs to family Nympheaceae. Swarna Vaidehi has been released as an ever first variety of makhana originated from selection-6. Nutritional profiling was undertaken for popped seeds of Swarna Vaidehi and local cultivar along with raw seeds of “Swarna Vaidehi”. Standard procedure was applied for nutritional profiling of the Makhana samples. Results reveled that maximum moisture content (34.7%) %) was recorded in case of raw seeds of swarna vaidehi. Maximum ash content (0.4%) was recorded in case popped seeds of both tested samples i.e. swarna vaidehi, lowest value (0.3%). Maximum seed protein (8.7%) was obtained by the swarna vaidehi. Maximum crude fiber (0.5%) was obtained in the raw seeds of swarna vaidehi as compare to popped one. Maximum total carbohydrate (79.8%) was recorded in popped seeds of swarna vaidehi; however the lowest value (57.0%) was also noticed in raw seeds of swarna vaidehi. It worth to notice that maximum calorific value (358) was recorded in popped seeds of swarna vaidehi. Maximum (18.5mg) calcium content was recorded in case of popped seeds of swarna vaidehi. Likewise maximum (1.3) manganese content was recorded in case of popped seeds of swarna vaidehi. It was worth to mention that maximum (1.1) zinc content was recorded in case of popped seeds of swarna vaidehi.

EFFECTS OF SOIL ACIDITY ON RHIZOBIA NUMBERS, NODULATION AND NITROGEN FIXATION BY ALFALFA AND RED CLOVER

1977 ◽  
Vol 57 (2) ◽  
pp. 197-203 ◽  
Author(s):  
W. A. RICE ◽  
D. C. PENNEY ◽  
M. NYBORG
Keyword(s):  
Nitrogen Fixation ◽  
Soil Ph ◽  
Soil Acidity ◽  
Field Experiments ◽  
Rhizobium Meliloti ◽  
Acid Soils ◽  
Red Clover ◽  
Ion Concentration ◽  
Hydrogen Ion Concentration ◽  
Greenhouse Experiments

The effects of soil acidity on nitrogen fixation by alfalfa (Medicago sativa L.) and red clover (Trifolium pratense L.) were investigated in field experiments at 28 locations, and in greenhouse experiments using soils from these locations. The pH of the soils (limed and unlimed) varied from 4.5 to 7.2. Rhizobia populations in the soil, nodulation, and relative forage yields (yield without N/yield with N) were measured in both the field and greenhouse experiments. Rhizobium meliloti numbers, nodulation scores, and relative yields of alfalfa decreased sharply as the pH of the soils decreased below 6.0. For soils with pH 6.0 or greater, there was very little effect of pH on any of the above factors for alfalfa. Soil pH in the range studied had no effect on nodulation scores and relative yields of red clover. However, R. trifolii numbers were reduced when the pH of the soil was less than 4.9. These results demonstrate that hydrogen ion concentration is an important factor limiting alfalfa growth on acid soils of Alberta and northeastern British Columbia, but it is less important for red clover. This supports the continued use of measurements of soil pH, as well as plant-available Al and Mn for predicting crop response to lime.

AN ASSESSMENT OF THE SOIL ACIDITY PROBLEM IN ALBERTA AND NORTHEASTERN BRITISH COLUMBIA

1977 ◽  
Vol 57 (2) ◽  
pp. 157-164 ◽  
Author(s):  
D. C. PENNEY ◽  
M. NYBORG ◽  
P. B. HOYT ◽  
W. A. RICE ◽  
B. SIEMENS ◽  
...  
Keyword(s):  
British Columbia ◽  
Soil Ph ◽  
Soil Acidity ◽  
Field Experiments ◽  
Trifolium Pratense ◽  
Acid Soil ◽  
Acid Soils ◽  
Red Clover ◽  
Hordeum Vulgare L ◽  
Crop Species

The amount of cultivated acid soil in Alberta and northeastern British Columbia was estimated from pH values of farm samples analyzed by the Alberta Soil Testing Laboratory, and the effect of soil acidity on crops was assessed from field experiments on 28 typical acid soils. The field experiments consisted of two cultivars of barley (Hordeum vulgare L.) and one cultivar each of rapeseed (Brassica campestris L.), red clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.) grown with and without lime for 2 yr. There are about 30,000 ha of soils with a pH of 5.0 or less where soil acidity seriously restricts yields of all four crop species. There are approximately 300,000 ha with a soil pH of 5.1–5.5 where liming will on the average increase yields of alfalfa by 100%, yields of barley by 10–15%, and yields of rapeseed and red clover by 5–10%. There are a further 1,600,000 ha where soil pH ranges from 5.6 to 6.0 and liming will increase yields of alfalfa by approximately 50% and yields of barley, rapeseed and red clover by at least 4–5%.

Soil acidity in 1970 and 1989 in a coniferous forest in southwest Finland

1998 ◽  
Vol 78 (3) ◽  
pp. 477-479 ◽  
Author(s):  
C. J. Westman ◽  
S. Jauhiainen
Keyword(s):  
Key Words ◽  
Soil Ph ◽  
Soil Acidity ◽  
Mineral Soil ◽  
Coniferous Forest ◽  
Soil Layers ◽  
Water Suspension ◽  
Ph Values ◽  
Humus Layer ◽  
Repeated Sampling

Forest soil pH in southwest Finland was measured with identical sampling and analysing methods in 1970 and 1989. The acidity of the organic humus layer increased significantly as pH values measured on water and on salt suspensions decreased between the two sampling dates. For the mineral soil layers, no unambiguous trend was found. pH values measured on salt suspension tended to be unchanged or lower, while pH on water suspension in some soil layers were even higher in 1989 than in 1970. Key words: pH, repeated sampling

scholarly journals In situ nitrogen mineralization and nutrient release by soil amended with black soldier fly frass fertilizer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dennis Beesigamukama ◽  
Benson Mochoge ◽  
Nicholas Korir ◽  
Changeh J. Ghemoh ◽  
Sevgan Subramanian ◽  
...  
Keyword(s):  
Soil Acidity ◽  
Organic Fertilizer ◽  
Soil Health ◽  
Nutrient Release ◽  
Tropical Soils ◽  
Control Treatment ◽  
Black Soldier Fly ◽  
Amended Soils ◽  
Cropping Seasons ◽  
Bacteria And Fungi

AbstractAlthough black soldier fly frass fertilizer (BSFFF) is effective on crop performance, information on nitrogen (N) mineralization and nutrient release capacity of soils amended with BSFFF is lacking. This study utilized field incubation experiments to investigate the ammonification, nitrification, microbial populations, and quantities of nutrients released by soils amended with BSFFF and commercial organic fertilizer (SAFI) for a period equivalent to two maize cropping seasons. For the control treatment, no BSFFF or SAFI was added. Results indicated that most of the N in BSFFF amended soils was available in the ammonium form, while soils treated with SAFI had higher nitrate concentration. The BSFFF amended soils experienced shorter net immobilization periods of N (30–60 days) compared to SAFI treated soils (60–95 days). Increased rates of mineralization (3–10 times) and nitrification (2–4 times) were observed in soils treated with BSFFF during the second season of application. The BSFFF treated soils showed significantly higher N, phosphorus, and magnesium release than the control. Repeated application of BSFFF led to increased N release by three-folds in the soil. Furthermore, soil amendment with BSFFF increased the populations of bacteria and fungi, reduced soil acidity, and increased phosphorus (two-folds) and magnesium (two–four-folds) release than SAFI treated soils. Our findings highlight the crucial role of BSFFF in improving soil health by addressing the challenges of soil acidity, phosphorus fixation and nutrient mining, which is characteristic of most tropical soils.

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