EFFECTS OF LONG-TERM SURFACE APPLICATIONS OF LIMESTONE AND FERTILIZERS TO PERMANENT HAYLAND

1960 ◽  
Vol 40 (1) ◽  
pp. 28-34 ◽  
Author(s):  
L. B. MacLeod ◽  
R. F. Bishop ◽  
L. P. Jackson ◽  
E. T. Goring
Keyword(s):  
Phosphorus Content ◽  
Soil Phosphorus ◽  
Chemical Properties ◽  
Yield Response ◽  
Botanical Composition ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Limestone, nitrogen, phosphorus and potassium, alone and in various combinations, were applied to the surface of permanent hayland during a 27-year period. Both limestone and phosphorus produced marked changes in the chemical properties of the soil. Phosphorus content of the soil where surface applications of this fertilizer were made decreased markedly with depth of sampling. Yield response to phosphorus was greater than to nitrogen or potassium although changes in botanical composition of the sward indicated the value of nitrogen, for grass and of limestone for legumes. Irrespective of the treatment, yields declined with time.

Fertilizer responses with non-irrigated Shiraz grapevines, 1944-1966

1970 ◽  
Vol 21 (2) ◽  
pp. 243 ◽  
Author(s):  
HW Tulloch ◽  
WB Harris
Keyword(s):  
South Australia ◽  
Growth And Yield ◽  
Yield Response ◽  
Positive Interaction ◽  
Severe Reduction ◽  
Factorial Trial ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus

A long-term factorial trial with nitrogen, phosphorus, and potassium fertilizers was started at Nuriootpa Viticultural Station, South Australia on the grape cultivar Shiraz in 1944. Results show a significant yield response to superphosphate. Long-term applications of ammonium sulphate resulted in severe reduction of vine growth and yield, and a significant lowering of soil pH. No direct response to potassium sulphate was obtained except in one year, but a positive interaction between potassium and phosphorus occurred in some years. An analysis of the components of yield in 1964 showed that the increase in yield with superphosphate was due to an increase in the number of berries per bunch. The nitrogen, phosphorus, and potassium contents of petioles were determined and related to available reference standards.

EFFECT OF NITROGEN, PHOSPHORUS AND POTASSIUM ON YIELDS AND NUTRIENT LEVELS IN THE LEAVES OF PROCESSING PEAS

1968 ◽  
Vol 48 (3) ◽  
pp. 225-233 ◽  
Author(s):  
R. F. Bishop ◽  
C. R. MacEachern ◽  
J. S. Leefe ◽  
H. B. Cannon
Keyword(s):  
Chemical Properties ◽  
Yield Response ◽  
Nutrient Levels ◽  
Consistent Increase ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Leaf N

Fertilizer trials with processing peas were conducted at 15 locations during a 4-year period. Although the soils varied in their chemical properties, there was no general or consistent yield response with increasing rates of N, P or K. There was, however, a consistent increase in leaf N with the higher rates of N and in leaf K with all rates of K. Increasing rates of K were accompanied by decreasing leaf levels of Ca and Mg. The results indicate that N, P and K applied at approximately 25, 50 and 25 kg/ha respectively should be generally adequate.

scholarly journals Effects of serpentinite fertilizer on the chemical properties and enzyme activity of young spruce soils

2016 ◽  
Vol 30 (4) ◽  
pp. 401-414 ◽  
Author(s):  
Ewa Błońska ◽  
Kazimierz Januszek ◽  
Stanisław Małek ◽  
Tomasz Wanic
Keyword(s):  
Enzyme Activity ◽  
Chemical Properties ◽  
Molar Ratio ◽  
Tree Roots ◽  
Forest Zone ◽  
Negative Effect ◽  
Phosphorus And Potassium ◽  
One Year ◽  
Nitrogen Phosphorus ◽  
Experimental Plots

AbstractThe experimental plots used in the study were located in the middle forest zone (elevation: 900-950 m a.s.l.) on two nappes of the flysch Carpathians in southern Poland. The aim of this study was to assess the effects of serpentinite in combination with nitrogen, phosphorus, and potassium fertilizers on selected chemical properties of the soil and activity of dehydrogenase and urease in the studied soils. All fertilizer treatments significantly enriched the tested soils in magnesium. The use of serpentinite as a fertilizer reduced the molar ratio of exchangeable calcium to magnesium, which facilitated the uptake of magnesium by tree roots due to competition between calcium and magnesium. After one year of fertilization on the Wisła experimental plot, the pH of the Ofh horizon increased, while the pH of the mineral horizons significantly decreased. Enrichment of serpentinite with nitrogen, phosphorus, and potassium fertilizers stimulated the dehydrogenase activity in the studied organic horizon. The lack of a negative effect of the serpentinite fertilizer on enzyme activity in the spruce stand soil showed that the concentrations of the heavy metals added to the soil were not high enough to be toxic and indicated the feasibility of using this fertilizer in forestry.

scholarly journals Exploring the Yield Response of Paddy (Oryza sativa L.) under Varying Levels of Soil Nitrogen, Phosphorus and Potassium

2020 ◽  
Vol 31 (4) ◽  
pp. 01
Author(s):  
H. P. G. T. N. Kulasinghe ◽  
U. W. A. Vitharana ◽  
R. S. Dharmakeerthi ◽  
D. N. Sirisena ◽  
W. M. U. K. Rathnayake
Keyword(s):  
Oryza Sativa ◽  
Soil Nitrogen ◽  
Yield Response ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

scholarly journals Yield Response of the Puerto Rico and Columnaris Coffee Cultivars in Two Latosols of Puerto Rico, as Affected by Different Levels of Nitrogen, Phosphorus, Potassium, and Lime

1969 ◽  
Vol 48 (3) ◽  
pp. 255-262
Author(s):  
Saulo J. Rodríguez ◽  
R. Bosque-Lugo ◽  
R. Pérez-Pérez ◽  
A. Rodríguez-Cabrera
Keyword(s):  
Puerto Rico ◽  
Plant Nutrients ◽  
Yield Response ◽  
Lateritic Soils ◽  
Nitrogen Levels ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Different Levels

A set of four experiments with increasing levels of the three main plant nutrients and liming were established in two lateritic soils at two locations in the coffee-growing area of Puerto Rico. Two coffee cultivars were used in the experiments. The results obtained can be summarized as follows: 1. Nitrogen levels significantly affected coffee yields of the Puerto Rico cultivar in a Catalina clay at Maricao grown under shade. 2. Phosphorus and potassium did not significantly affect the yields of these coffee cultivars at the two locations. 3. Liming did not significantly affect the yields.

scholarly journals Communicating the Risks and Benefits of Human Urine-Derived Fertilizer

2020 ◽  
Vol 12 (23) ◽  
pp. 9973
Author(s):  
Alex Segrè Cohen ◽  
Nancy G. Love ◽  
Joseph Árvai
Keyword(s):  
Risk Communication ◽  
Human Urine ◽  
Communication Strategies ◽  
Consumer Acceptance ◽  
Public Acceptance ◽  
Global Challenge ◽  
Urine Diversion ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Ensuring long-term access to nutrients needed for food production is a growing global challenge. Human urine diversion and recycling is a viable and energy-efficient means of recovering nitrogen, phosphorus, and potassium from wastewater. Before implementation, however, it is critical to understand how communicating differently about human urine-derived fertilizer may influence its public acceptance. This study tests how different strategies of communication (video compared to texts), as well as different amounts of information, impact public acceptance. We also explored how specific characteristics, such as age and education level, may impact the usefulness of the different strategies of communication. The results indicate that short and long videos are the most useful risk communication strategies, and age fully moderates this relationship. This research may serve as a jumping off point for future studies focused on how risk communication strategies may affect consumer acceptance of other emerging food technologies.

scholarly journals Modeling of rose coco beans using twenty four points optimum second order rotatable design

2017 ◽  
Vol 5 (2) ◽  
pp. 96
Author(s):  
Isaac Tum ◽  
John Mutiso ◽  
Joseph Koske
Keyword(s):  
Response Surface ◽  
Maximum Yield ◽  
Second Order ◽  
Three Dimensions ◽  
Coefficient Of Determination ◽  
Yield Response ◽  
Efficient Production ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus ◽  
Rotatable Design

The response surface methodology (RSM) is a collection of mathematical and statistical techniques useful for the modeling and analysis of problems in which a response of interest is influenced by several variables, and the objective is to optimize the response. The objective of the study was to model the rose coco beans (Phaseolus vulgaris) through an existing A-optimum and D-efficient second order rotatable design of twenty four points in three dimensions in a greenhouse setting using three inorganic fertilizers, namely, nitrogen, phosphorus and potassium. Thus, the objective of the study was accomplished using the calculus optimum value of the free/letter parameter f=1.1072569. This was done by estimating the parameters via least square's techniques, by making available for the yield response of rose coco beans at calculus optimum value design for the first time. The results showed that, the three factors: nitrogen, phosphorus, and potassium contributed significantly on the yield of rose coco beans (p<0.05). In GP3G, the second-order model was adequate for 1% level of significance with p value of 0.0034. The analysis of variance (ANOVA) of response surface for rose coco yield showed that this design was adequate due to satisfactory level of a coefficient of determination, R2, 0.8066 and coefficient variation, CV was 10.30. This study demonstrated the importance of statistical methods in the optimal and efficient production of rose coco beans. We do recommend a randomize screening of all the fertilizer components with which it has influence on rose coco beans be done to ascertain the right initial amount of each fertilizer that could achieve maximum yield than this study realized.

RESPONSE OF SPRING WHEAT AND BARLEY TO NITROGEN, PHOSPHORUS AND POTASSIUM

1971 ◽  
Vol 51 (1) ◽  
pp. 1-11 ◽  
Author(s):  
R. F. BISHOP ◽  
C. R. MacEACHERN
Keyword(s):  
Protein Content ◽  
Spring Wheat ◽  
Plant Tissue ◽  
Crude Protein ◽  
Chemical Properties ◽  
Crude Protein Content ◽  
Grain Yields ◽  
The Third ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Fertilizer trials with spring wheat and barley were conducted at a total of seven and nine locations, respectively, during a three-year period. Treatments consisted of three rates of N, of P and of K in all possible combinations. Although the soils varied in their chemical properties, grain yields increased with the second increment of N in some years and the crude protein content of the grain increased with the third increment in all years. Grain yields were not increased by the second increment of either P or K. Although the effects of increasing rates of N, P and K on the levels of these nutrients in plant tissue were predominantly linear, increases in N levels were of much greater magnitude than increases in either P or K levels. The results indicate that N, P and K at approximately 135, 39 and 37 kg/ha, respectively, should be generally adequate.

Long-term nitrogen, phosphorus and potassium fertilization of cassava influences soil chemical properties in North Vietnam

2001 ◽  
Vol 81 (4) ◽  
pp. 481-488 ◽  
Author(s):  
Hung Nguyen ◽  
J J Schoenau ◽  
K. C.J. Van Rees ◽  
Dang Nguyen ◽  
P. Qian
Keyword(s):  
Soil Properties ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Mineral Fertilizers ◽  
Inorganic P ◽  
Total Soil ◽  
North Vietnam ◽  
Nitrogen Phosphorus ◽  
Soil Inorganic

The long-term effects of yearly fertilizer applications on soil chemical properties and nutrient availability are not well documented for cassava (Manihot esculenta) production in Vietnam. In 1990, research plots were established (randomized complete block design) with 12 treatments to test effects of different rates of N, P and K on soil properties in Acrisols (FAO-UNESCO Soil Classification) at Thai Nguyen University, North Vietnam. In June 1998, composite soil samples (0- to 10-cm and 10- to 20-cm depth) were collected from each plot. Nine years of N application significantly reduced the labile pools of soil inorganic P, total soil P and soil extractable K and Mg. Total soil N was only slightly increased in the 10- to 30-cm depth. Long-term applications of P significantly increased soil inorganic P fractions, but reduced concentrations and supply rates of nitrate and K. Moreover, 9 yr of K application significantly increased soil organic C (two depths), soil total N (10-30 cm) and soil extractable K in the 0- to 10-cm depth. Generally, the results show that long-term applications of mineral fertilizers in a ratio of N:P2O5:K2O of 2:1:2 (at the rates of 80 N:40 P2O5:80 K2O or 160 N:80 P2O5:160 K2O) are effective in maintaining the total content and availability of applied nutrients, but when applied alone are associated with decreases in other nutrients. Key words: Nitrogen, phosphorus, potassium fertilizers, cassava, ion exchange resin, soil properties

scholarly journals Effects of Tree Species and Soil Enzyme Activities on Soil Nutrients in Dryland Plantations

Forests ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1153
Author(s):  
Yage Li ◽  
Chun Han ◽  
Shan Sun ◽  
Changming Zhao
Keyword(s):  
Soil Nutrients ◽  
Tree Species ◽  
Enzyme Activities ◽  
Chemical Properties ◽  
Soil Enzyme ◽  
Pinus Tabulaeformis ◽  
Soil Enzyme Activities ◽  
Caragana Korshinskii ◽  
Nitrogen Phosphorus

Long-term afforestation strongly changes the soil’s physicochemical and biological properties. However, the underlying mechanism of different tree species driving change in soil nutrients is still unclear in the long-term dryland plantations of the Loess Plateau, China. In this study, samples of surface soil (0–20 cm) and woody litter were collected from five plantations (≥50 years) of Caragana korshinskii, Armeniaca sibirica, Populus hopeiensis, Platycladus orientalis, and Pinus tabulaeformis and a natural grassland, and tested for the carbon, nitrogen, phosphorus, and potassium contents, as well as the soil sucrase (SC), urease (UE), and alkaline phosphorus (ALP) activities. We found that soil nutrients, enzyme activities, and the litter’s chemical properties obviously varied among five tree species. C. korshinskii significantly increased the soil’s TC, organic carbon (OC), total nitrogen (TN), available nitrogen (AN), and available potassium (AK) by 28.42%, 56.08%, 57.41%, 107.25%, and 10.29%, respectively, and also increased the soil’s available phosphorus (AP) by 18.56%; while P. orientalis significantly decreased soil TN (38.89%), TP (30.58%), AP (76.39%), TK (8.25%), and AK (8.33%), and also decreased soil OC (18.01%) and AN (1.09%), compared with those in grassland. The C. korshinskii plantation had higher quality litter and soil enzyme activities than the P. orientalis plantation. Moreover, 62.2% of the total variation in soil nutrients was explained by the litter’s chemical properties and soil enzyme activities, and the litter phosphorus (LP) and soil ALP had a more significant and positive impact on soil nutrients. Therefore, tree species, LP, and soil ALP were key factors driving soil nutrient succession in dryland plantations. The significantly positive nitrogen–phosphorus coupling relationship in the “litter–enzyme–soil” system revealed that the improving nitrogen level promoted the phosphorus cycle of the plantation ecosystem. Our results suggest that leguminous tree species are more suitable for dryland afforestation through the regulation of litter quality and soil enzyme activities.

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