Definitions, Formulas & Examples. When the above is evaluated, the number of plants on the farmland or plant population is determined. meter (no. Monocropping, simple and complex mixing in a cassava-based rotation system. Effect of Spacing on Yield of Two Pigeonpea Cultivars in Uganda. Olubode, 1987. (2002) among several others have established that the plant population plays a significant role in the final crop yield under any given condition. At times, you need to plant more than one seed per hole but later thin-out some seedlings as they grow to accommodate the most vigorous and healthy ones. Generally speaking, for 36-inch rows, growers should be planting a minimum seeding rate of around 36,300 seed/A (2.5 seed/foot of row, or 2 seed every 9.6 inches hilldropped) in order to expect a final plant population of 30,000 plants/A. McGraw-Hill Book Company, New York.Tayo, T.O., 1990. 2. the plant population in a given area of land. Calculate the seed rate of green gram for sowing 1 hectare of crop from the following: spacing=45cm×10cm germination %=80% 1000 grain weight =48g Solution: Plant population= 10000 0.45×0.1 =222222.22 Seed rate= 222222.22×48×100 80×1000×1000 =13.33 kg (Ans). Performance of pigeon pea and its finger millet and sorghum intercrops. In agronomic research, especially in the conduct of field studies to evaluate crop performance, the determination of optimum sowing spacing and plant population per hectare (ha) is crucial. How to calculate Number of Plant per Hectare. Width in Feet. Ife J. Fagbohun. :) Notice that you can also use the plant spacing calculator to find the total rows and number of plants per row. Osiru and P. Okware, 2000. These three methods can be used to determine the total number of plant on your farm. It is known that estimates of crop yield, crop performance, diseases and pests rating, water-use-efficiency, crop response to stress etc are always based on plant population estimates, therefore, accurate plant population estimates will give true and reliable information about these parameters. NOTE: The unit of calculation here is meters. Maize planting population per hectare (10,000m) with a seed rate of one per hole, using the plant population formula, is approximately 53,333 plants. These parameters must be accurate to get accurate answers. and E. Hille, 1982. It is the number of plants the farm can accommodate; through this, one will determine the number of seeds or sucker or other planting material to use for planting operation. SSMG, 37: 1-16.Dashiell, K., H.C. Ezumah and S.O. From observations, the inadequacy of (2) is due to the loss of plants on two adjacent rows plus an additional plant. The unit of land area should be square miles or square kilometers. The term plant population refers to the number of soybean plants per acre. Nig. ), melon (Cucumeropsis edulis L.) and yam (Dioscorea rotundata Poir. Example: 23,805.5 linear meters/Ha x 3.7 plants/linear meter = 88,095 plants/Hectare. With all these data determined, you can proceed to calculate the plant population or determining the number of seeds needed to adequately cultivate a specific planting area successfully using any of the aforementioned methods. The closer the spacing, the more plants there will be per unit area. ), amaranth (Amaranthus cruentus L.), cock`s comb (Celosia argentea L.) and snake tomato (Trichosanthes cucumerina L.). There are two distance requirements for the calculation; the distance between tree rows and the distance between the trees themselves. 3. But, if you are reading this article; knowing how to determine plant population or the number of plants on your farm becomes easy henceforth. Crop Sci. Hitting the target: This six-year-old, two-hectare (five-acre) Pink Lady block on Malling Merton 106 rootstocks, and trained on an open Tatura system, produced a gross yield of 236 tons per hectare (236 bins per acre) and a total marketable yield of 219 tons per hectare (219 bins per acre) from four harvests. The condition in Eq. I used this plant population calculator. In this consideration, L', B', l' , b' may be expressed as a parametric function of another variable. It can be used to confirm planter accuracy during planting, or to evaluate crop stand after emergence. Typical row spacing in the Red River Valley is 36 inches. CALCULATE PLANT POPULATION PER HECTARE OR JERIB (1 Ha = 10,000m² and 1 Jerib = 2000 m²) Multiply linear meters per Ha at a 0.42 meter row width by number of plants/meter. When trying to calculate the amount of potato seed needed, the row spacing, within-row spacing, and seed size need to be taken into consideration. Plant populations are not the same as seeding rates. How to calculate Plant Population per hectare. Try it yourself to see how simple and easy it is. The Plant population of any field is given by multiplying the between plants spacing with the spacing between the rows. John Wiley and Sons, Canada.Spiegel, M.R., 1968. This constraint is subject to prevent overcrowding, thereby leading to an optimal yield. Count the number of plants along the length. Using just the right amount of pesticide and fertilizer minimizes the potential for personal, property, or environmental damage and maximizes consumers’ return on the dollar. How to calculate plant populations: By length of row. Divide 10000 by the result of multiplying the between plant spacing and the between rows spacing as given in as shown below Applying fertilizersplays a notable role in the economy of the crop production; this I found imperative to discuss before the calculation of the application rates of fertilizers, not for any reason but to appreciate the effects or the benefits of applying fertilizers at the right quantity. The recommended plant populations are generally higher for late-emerged seed. The formula is flexible and can be used for direct estimation of plant population in any given four dimensional fields of sole crop. Square Planting Pattern. Plants Needed: Based on # Sq. Spacing varies with the type and nature of crops; the spacing for maize and tomato varies with the breed of the seeds and the seed rate, that is, the number of seeds per hole. physical counting and by using the existing mathematical formula. The total area of a hectare is 10000 square metres. Seeding rate or planting rate refers to the number of soybean seeds planted per acre to attain a certain plant population. Let L and B be the length and breadth of the farm, respectively, while l and b are the length and breadth of the spacing on the farm land and N the number of seeds per stand. Lastly, you need to know the number of seeds you intend to plant per hole; this is called Seed rate. (2003) proposed a formula, which is a variation of (1) using the Excel spreadsheet. Let dL', dB' be the elemental length and breadth of farm field, respectively, while and dl', db' are the length and breadth of spacing, respectively, then Eq. Row spacing: Metre: Vine spacing: Metre: Results: Vine density per Hectare # Orchard & Vineyard Calculators. Some maize seeds are very viable and are planted just one per hole. Take that number and multiply by 100 then divide by the seed row spacing in cm to get plants per square metre. Calculus One and Several Variables with Analytic Geometry. to determine with accuracy the plant population in a four dimensional field Hence, (17) is a general form of Eq. Place a 30cm stick/ruler or clipboard along a row. Site specific guidelines. Multiply the Planting Area by the Seed rate and then, divide the product by the Spacing or Planting distance. 3. Silim, 1996. 1. Then you can estimate the cost of seeds and planting material yourself. Read […], […] of mulching plantain with sawdust. ), Ezumah and Osiru (1987) reported populations of 50, 000; 10, 000 and 10, 000 plants per ha at 1.0x0.02, 1.0x1.0 and 1.0x1.0 m, respectively. On-farm experience has shown that the values obtained by the above formula just you can check the plant population per ha and multiply with weight per plant e.g. The number of trees per hectare, according to the spacing between the lines in a plantation and the spacing of plants within a line, is given in Table 4.1. The use of plant population formula is the most effective and cheapest method. You can use square feet or meters if you are finding the density of a smallish space. Mathematical Handbook of Formulas and Tables, Schaums Outline Series. Your crops need adequate space to garner all needed to facilitate their growth, such as nutrient, air, and water. The plant spacing calculator will tell you how many plants you need in a rectangular and a triangular grid - here, 6,188 for a rectangular grid and 7,059 for triangular spacing. For example, 25 plants per metre multiplied by 100 then divided by 25 cm (10” row spacing) is 100 plants per square metre. Use our handy calculator to determine the appropriate number of plants needed for an area. The concern of this study is to replace the inaccurate existing formula with an accurate one in order to eliminate the variation between theory and practice. Theoretical estimation of maize population using the above formula by Mutungamiri et al. To determine on a jerib basis just divide the above number by five. 5 becomes. that 32, 15.5, 6.1 and 6.1% of the snake tomato, tomato, amaranth and cock’s planted at 75x5 cm to be 26, 700 plants per ha at one plant per stand while that of cassava planted at 1.0x1.0 m was 10,000 plants per ha at one plant per stand.In a study on cowpea (Vigna unguiculata (L.) Walp. and A.B. 1). The first thing you must know is the area of your field. To figure planting rate, use this formula: You need to plant 7.9 seeds per foot of row to get six plants per foot. […] Firstly, you need to determine the population of plants on your farm; for this example, the population of maize on an area of 350sqm is 233 maize plants. On the basis of the variation observed in the plant population estimation by physical counting and existing mathematical formula, a new formula was developed. Crop production has economic importance ; fertilizer application is not left out the obtained... 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