scholarly journals Soil Testing A Panacea to Crop Yield and Agricultural Sustainability – A Case for Farmers of South Eastern, Nigeria

2020 ◽  
Vol 2 (2) ◽  
pp. p7
Author(s):  
Nweke, I. A.

Increasing human population is closely related with the increasing demand of food and pressure on available land with the rising demand on fertilizer that has not been sustainable at the farmer’s level. This causes soil fertility decline, nutrient imbalance and low residual effect which are constraint affecting agricultural production in south eastern soils of Nigeria in particular and to large extent in tropical environment. Land available to be used for intensive crop production activities is limited and this demand for adequate soil testing that will x-ray the fertility status of the soil before crop planting. The characteristics and amount of nutrient elements of a soil and soil biodiversity is influenced by climatic conditions, erosion/leaching, drought, cultivation history/land use system, cropping history, kinds of pesticides/herbicides applied, type and methods of inorganic and organic fertilizer applied. Soil testing quantifies the total value of plant nutrient elements available in a sampled soil that will directly promote crop growth and yield. Due to its biophysical, biochemical, biological and physiochemical results, soil testing when appropriately interpreted and applied may be used effectively to promote sustainable crop production and environmental health in a tropical soil like south eastern, Nigeria.

Author(s):  
Shinta Lestari Santosa ◽  
I Nyoman Rai ◽  
Wayan Diara

Vegetable cultivation is livelihoods for side Lake Batur communities, Kintamani, Bangli. Hilly natural conditions with a soil texture influenced by the eruption of Mount Batur, 900 m above sea level, and 900-3500 mm high rainfall, causing this region is very suitable for the cultivation of various vegetables, including shallot. One effort to meet the high demand for shallots is that efforts are made to improve cultivation techniques, including fertilizing to improve yields. In modern agriculture, the use of fertilizer is absolutely essential to trigger the level of crop production. The aims is to analyze the combination effect of using of inorganic fertilizer (ZA fertilizer) and organic fertilizer (compost fertilizer) on shallot vegetable cultivation systems on the content of pollutants, N nutrients and onion crop yields on the shores of Lake Batur, Kintamani District, Bangli Regency. The study using RBD with two factors where factor I: provision of organic fertilizer is leaf compost made aerobically (O), consisted of 3 levels, namely: O0 = 0*, O1 = 5* and O2 = 10*and factor II: the application of inorganic fertilizer namely ZA (S) fertilizer, consisted of 3 levels, namely: S0 = 0**, S1 = 50** and S2  = 100**, each repeated 3 times. The parameters observed were the growth and yield of shallots as well as the content of Pb, Zn, Cu and N nutrients in the soil. The nutrient content (N) in the soil, when using chemical fertilizer ZA and compost organic is not significantly different, as well as the results of onion plants, while the content of Pb, Zn and Cu on the use of chemical fertilizer ZA and organic compost, very real different. The highest soil Pb content in S2O1 treatment is 30.07***, the highest soil Zn content in the S2O1 treatment was 28.24***, and the highest soil Cu content in the S1O2 treatment is 17.22***. *= tons/ha **= kg/ha ***= mg/kg Keywords: compost; contents Pb; Zn; Cu of soil; shallot; ZA.


Agronomy ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 113 ◽  
Author(s):  
Mariangela Diacono ◽  
Paola Baldivieso-Freitas ◽  
Francisco Sans Serra

Optimization of the nitrogen (N) inputs and minimization of nutrient losses strongly affect yields in crop rotations. The aim of this research was to evaluate the effect of agricultural practices on yield and N use in a 4-year cereal-legume rotation in organic farming and to identify the best combination of these practices. The following treatments were compared: conventional plough (P) vs. reduced chisel (RC) tillage; composted farmyard manure (F) vs. unfertilized control (NF); and green manure (GM) vs. no green manure (NoM). No significant differences were found for N use efficiency between P and RC in each crop. The results suggested that legumes in the tested rotation do not need supplemental N fertilization, particularly if combining GM and F. The use of composted farmyard manure should be considered in a long-term fertilization plan for cereals, to allow a higher efficiency in N use. The residual effect of fertilization over time, along with the site-specific pedo-climatic conditions, should also be considered. In both tested tillage approaches, soil N surplus was the highest in plots combining GM and F (i.e., more than 680 kg N ha−1 in combination with RC vs. about 140 kg N ha−1 for RC without fertilization), with a risk of N losses by leaching. The N deficit in NoM–NF both combined with P and RC would indicate that these treatment combinations are not sustainable for the utilized crops in the field experiment. Therefore, the combination of the tested practices should be carefully assessed to sustain soil fertility and crop production.


2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Didik Sucahyono ◽  
Yudi Widodo ◽  
Runik D. Purwaningrahayu ◽  
Henny Kuntyastuti ◽  
Herdina Pratiwi ◽  
...  

The study aimed to investigate an effect of organic fertilizer applied to rice in the first planting season for unfertilized soybean as second crop followed by inorganic and biofertilizer applied in the third season on soybean growth and yield under the rice-soybean-soybean cropping pattern in 2016/2017. The main plot was organic: (1) without organic amendment, (2) 10 t·ha−1 of chicken manure, and (3) 10 t·ha−1 precomposted rice straw. The subplot was inorganic N and P fertilizers and commercial biofertilizer (consisting of Rhizobium, nitrogen-fixing bacteria, and P-solubilizing bacteria) applied at planting of soybeans in the second dry season: (1) control (no inorganic and biofertilizer), (2) 50 kg urea ha−1, (3) 100 kg SP36·ha−1, (4) 50 kg urea + 100 kg SP36 ha−1, (5) biofertilizer, (6) biofertilizer + 25 kg urea ha−1, (7) biofertilizer + 75 kg SP36 ha 1, and (8) biofertilizer + 25 kg urea + 75 kg SP36 ha−1. Soybean planted on the first dry season after rice harvested was not fertilized (untreated). The results showed that the chicken manure amendment increased grain yield of soybean in the second season, i.e., from 1.03 t·ha−1 (without organic amendment) to 1.27 t·ha−1, an increase of 23%. There was no effect of rice straw on soybean grain yield. In the third season, however, the residual effect of straw compost or chicken manure increased soybean grain yield by 8% and 20%, respectively. Both straw compost and chicken manure also showed a positive effect on the use of inorganic and biofertilizers in increasing soybean productivity.


Author(s):  
Masita Masita ◽  
J F Rehena ◽  
John Riry ◽  
Ali Awan

Background: One type of organic fertilizer is manure that contains nutrients that can support the growth of microorganisms in soil fertility and soil. On the island of Buru, the people there know and cultivate community hotong normally used as a traditional food. Methods: This study was conducted in the District Three Village house Baguala, which lasted for four months ie from March to June 2015. The study was conducted in the form of two factor experiment in a randomized complete block design (RAK). The first factor (I) is a type of organic fertilizer (F), which consists of 4 levels of treatment and the second factor (II) is a dose of organic fertilizer (M) comprising 5 stage treatment. Observations were made on indicators of growth in terms of height and number of leaves and production indicators include the number of tillers (JA), the number of panicle (JM), panicle length (PM), planting seed weight (BBP), and the dry weight of stover (BKB). Results: The existence of the effect of the type of organic fertilizer on the growth and poduksi plant hotong seen in the treatment of type of fertilizer week 8 is on F3 and F4 showed high growth of crops, leaf number ever, the number of panicle most, the number of tillers most, panicle length of the longest and most planting seed weight and dry weight of stover. The influence dose of organic fertilizer on the growth and yield of hotong look at treatment week 8, namely the treatment of M2, M3 and M4 showed high growth of crops and the number of leaves, the highest and the treatment number of panicles and tillers most, panicle length of the longest as well as the weight of seed planting and a dry weight of stover. Recommendations effective fertilizer in crop cultivation hotong is to use the type of chicken manure and cow with doses of 900 and 1200 g / polybag. Conclusion: The interaction between treatment types of fertilizers and fertilizers at the variable growth in terms of height (TT) and number of leaves (JD) as well as for variable production panicle length (PM), the weight of the seed crop (BBP) and the dry weight of stover (BKB) showed their influence the type and dose of fertilizer on each variable hotong growth and crop production, reflected in the growth and crop production hotong diverse in every treatment.


2021 ◽  
pp. 147-170
Author(s):  
Balwant Singh ◽  
Shefali Mishra ◽  
Deepak Singh Bisht ◽  
Rohit Joshi

AbstractRice is a staple food for more than half of the global population. With the increasing population, the yield of rice must correspondingly increase to fulfill the requirement. Rice is cultivated worldwide in four different types of ecosystems, which are limited by the availability of irrigation water. However, water-limiting conditions negatively affect rice production; therefore, to enhance productivity under changing climatic conditions, improved cultivation practices and drought-tolerant cultivars/varieties are required. There are two basic approaches to cultivation: (1) plant based and (2) soil and irrigation based, which can be targeted for improving rice production. Crop plants primarily follow three mechanisms: drought escape, avoidance, and tolerance. Based on these mechanisms, different strategies are followed, which include cultivar selection based on yield stability under drought. Similarly, soil- and irrigation-based strategies consist of decreasing non-beneficial water depletions and water outflows, aerobic rice development, alternate wetting and drying, saturated soil culture, system of rice intensification, and sprinkler irrigation. Further strategies involve developing drought-tolerant cultivars through marker-assisted selection/pyramiding, genomic selection, QTL mapping, and other breeding and cultivation practices such as early planting to follow escape strategies and decreasing stand density to minimize competition with weeds. Similarly, the identification of drought-responsive genes and their manipulation will provide a technological solution to overcome drought stress. However, it was the Green Revolution that increased crop production. To maintain the balance, there is a need for another revolution to cope with the increasing demand.


2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Mostafa Mohamed Selim

Alleviation of poverty and achievement of zero-hunger target and food security are significant challenges faced by agricultural planners worldwide. Improving many agronomic approaches, which have drastic effects on crop growth and yield, is urgently needed to report this aim. Replacement of a part of chemical fertilizers by organic manure through a simple technique of using minimum effective dose of sufficient and balanced quantities of organic and inorganic fertilizers in combination with specific microorganisms, called INM, has a bright solution in this area. Recently, several investigators reported that integrated use of chemical fertilizers with organic manure is becoming a quite promising practice not only for maintaining higher productivity but also for greater stability to crop production. In addition, INM acts as a source of energy, organic carbon, and available nitrogen for the growth of soil microbes and improvement of physical properties of soil, and also have great residual effect on subsequent crops. So, the key component of the INM goal is to reach the eco-friendly practice through the harmonious properties of both sources by making a combination that can be used for decreasing the enormous use of chemical fertilizers and accreting a balance between fertilizer inputs and crop nutrient requirement, maintaining the soil fertility, optimizing the level of yield, maximizing the profitability, and subsequently reducing the environmental pollution. Lastly, INM is a tool that can offer good options and economic choices to supply plants with a sufficient amount of nutrients in need and can also reduce total costs, create favorable soil physiochemical conditions and healthy environment, eliminate the constraints, safeguard the soil nutrient balance, and find safety methods to get rid of agriculture wastes.


2008 ◽  
Vol 56 (3) ◽  
pp. 303-312 ◽  
Author(s):  
U. Sangakkara ◽  
P. Stamp

Improved fallows are considered an easy, low cost and suitable method of increasing the productivity and sustainability of smallholder tropical rainfed cropping systems, although most farmers allow weeds to grow when the environmental conditions are not conductive for crop production. Field studies were carried out over the minor and major seasons, to evaluate the impact of a preceding improved fallow using Crotalaria or Tithonia , two popular tropical green manures, on selected soil properties, and on the growth and yield of maize. Improved fallows enhanced chemical soil properties significantly and the impact was most prominent at the onset of the minor maize season. Thus, the growth and yield of maize was also increased to a greater extent in this season, when yields are generally lower due to the suboptimal climatic conditions of lower rainfall and higher temperatures. However, fallows in the minor season also improved soil characteristics and maize yields in the major season, the most significant impact being increased seed yields and harvest indices. Although farmers may not grow fallow crops in major seasons, the potential of these green manure fallows in increasing maize yields in minor seasons and possible strategies to include the fallows in the cropping sequences of tropical rainfed upland cropping systems are discussed on the basis of this field study.


2009 ◽  
Vol 24 (4) ◽  
pp. 245-250 ◽  
Author(s):  
O.O. AdeOluwa ◽  
G.O. Adeoye ◽  
S.A. Yusuff

AbstractChemical fertilizers for boosting crop production are becoming more expensive and scarce. Green amaranth (Amaranthus caudatus L.) is a fast growing and highly nutritious crop, but its common use in the diet of Nigerians is constrained by its high demand for nitrogen fertilizer. Thus, there is a need to find local fertilizer materials that are readily available to peasant farmers. A preliminary field study was conducted to evaluate urine and neem (Azadirachta indica L. juss) as alternative sources for mineral fertilizers in fortifying organic fertilizer (OF) made from cow dung and market waste compost, and OF fortified with urea and bone meal [organo-mineral fertilizer (OMF)], for yield and growth of green amaranth. Fifteen treatments, based on the percentages of N supplied, were NPK15-15-15, OMF, OF, urine, neem and ten treatments of 50, 60, 70, 80 or 90% OF supplemented with a total of 50, 40, 30, 20 and 10% urine or neem, respectively, to provide a total application rate of 100 kg N ha−1, with no fertilizer treatment as a control. Planting was done in two successions (main with fertilizer treatments and residual without further application). The fertilizer sources and levels had significant effects on plant height, number of leaves, stem girth, fresh weight and dry weight. The residual effects were also significant for plant height, number of leaves, total fresh and dry weights. Forty percent N urine amendment of the OF produced the highest total fresh amaranth biomass (269.3 g plot−1 main effect and 110.8 g plot−1 residual effect), which was significantly better than the values of (140 and 35.3 g plot−1, respectively) obtained with respect to OMF during main planting and NPK during residual planting. Results of our study reveal that 40% N urine fortification of OF was a viable substitute for synthetic fertilizers in production of amaranth, and that urine and neem cake can be alternatives to mineral fertilizer for crop production.


2021 ◽  
Vol 13 (4) ◽  
pp. 35
Author(s):  
Adebusoye O. Onanuga ◽  
Roy Weasel Fat ◽  
Roy M. Weasel Fat

An experiment was conducted in Standoff, Southern Alberta in April, 2020. The object of the experiment was to investigate effect of rock phosphate organic fertilizer on growth and yield of potato crop grown in Standoff. The varying levels of rock phosphate were broadcasted into the soil at control (0 P Kg ha-1), Low P level (50 P Kg ha-1) and High P level (100 P Kg ha-1). The basal application of urea inform of nitrogen fertilizer was applied at 280 N Kg ha-1. Potato seeds were planted at a distance of 30 by 90 cm. The three treatments were replicated three times, resulting into nine plants. One plant was taken out of uniformly grown tallest plant in each of the treatment to measure yield parameters. The yield parameters collected were subjected to analysis of variance (ANOVA) using Duncan’s Multiple Range Test (DMRT) for separation of means. Results of the experiment indicated that High P and Low P rock phosphate fertilizer levels positively influenced weight of potatoes at 76 and 112 Days after sowing (DAS), respectively while High P rock phosphate fertilizer level got highest number of potatoes than Low P and control at 76 DAS. Furthermore, High P rock phosphate fertilizer level and control plots supported marketable number of potatoes at 76 DAS while High P rock phosphate fertilizer level favoured unmarketable number of potatoes at 112 DAS. It was quite obvious from the results that marketable weight of potatoes was positively influenced by High P rock phosphate level and Low P rock phosphate level at 76 and 112 DAS, respectively whereas unmarketable weight of potatoes was affected by High P rock phosphate fertilizer level at 112 DAS. These results revealed the beneficial use of rock phosphate for potato crop production


2021 ◽  
Vol 4 (2) ◽  
pp. 276-285
Author(s):  
Ana Amiroh ◽  
Achmad Anton Prastyo ◽  
Mahayu Woro Lestari ◽  
Palupi Puspitorini

Soybean (Glycine max L.Merrill) is one of the main food commodities in Indonesia. The need for soybeans continues to increase in line with the increasing population of Indonesia. To overcome the problem of the gap between soybean production and consumption, efforts can be made to increase soybean production through fertilizers. Apart from fertilizers, mulching is an important component in efforts to increase plant growth and yield. Therefore, liquid organic fertilizer and organic mulch are the right innovations to be applied to support the growth and production of these soybean plants. The research method used was a randomized block design (RBD) with a factorial pattern with 3 replications, which consisted of 2 factors. The first factor was Liquid Organic Fertilizer (P) consisting of 3 levels, namely P1 (cow urine), P2 (goat urine), P3 (rabbit urine). The second factor was kinds of organic mulch with 3 levels, namely M0 (no mulch), M1 (straw mulch), M2 (husk mulch). The purpose of this study was to determine the effect of livestock bio urine and organic mulch on the growth and production of soybean (Glycine max. L,Merril). From the results of observations and calculations through analysis of variance, it can be concluded that the ones that give high production are the treatment of Rabbit Urine Liquid Organic Fertilizer and Organic Straw Mulch (P3M1).


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