In the harvest index?

Asked by: Prof. Cicero Leffler
Score: 4.1/5 (71 votes)

Harvest index (HI) is the ratio of grain to total shoot dry matter and is as a measure of reproductive efficiency. HI is determined by interactions between genotypes (G), environment (E), and crop management (M).

What is harvest index in crops?

For grain crops, harvest index (HI) is the ratio of harvested grain to total shoot dry matter, and this can be used as a measure of reproductive efficiency.

What is harvest index percentage?

This is commonly expressed in a ratio called harvest index. ... Harvest index is defined as the pounds of grain divided by the total pounds of above ground biomass (stover plus grain).

Which crop has highest harvesting index?

When the harvest index was ex- pressed on an energy basis, there was improvement in all the species. However, the maximum increase was in oil-seed crops, In fact, the oil-seed crops had the highest harvest index on the basis of energy content and were followed by wheat, grain legumes, triticale and barley.

43 related questions found

How do you increase harvest index?

Importantly, land leveling, tillage, mulching and use of manures, time and sowing method, optimum plant population, weed eradication and insect and pests and diseases control are inevitable agronomic measures for improving grain crop harvest index.

What is maturity index?

The maturity index for a commodity is a. measurement or measurements that can be. used to determine whether a particular example of the commodity is mature. These indices are important to the trade in fresh fruits and vegetables for several reasons.

Can you pick carrots too early?

The good news is, you can harvest carrots as soon as they're large enough to eat, and you don't have to wait for them to finish growing. In fact, if you leave carrots to grow too large, they can turn woody and lose their sweetness.

What is the harvest index of maize?

In our field experiments, the average values of the harvest index at maize varied between 0.20 to 0.56, more frequently between 0.3 and 0.5. Harvest index registered higher values under more favourable soil and climatic conditions than under less favourable conditions.

What is queen of cereals?

Corn or maize is a cereal grain that belongs to the family 'gramineae' and is known as the 'Queen of Cereals' because of its several uses. The scientific name of corn is Zea mays.

What is the seed index?

The term Seed Quality Index, is a figure on a 0 to 100 scale, which. takes into account seed viability, vigor and integrity, according to the. following fornnula: SQI - Emergence Index x To Perfect Seedlings.

How is biological yield calculated?

Finally the harvest index (HI) was calculated to determine the fraction of economically useful products of a plant in relation to its total productivity (grain to straw ratio) and calculated using following formula: HI = (EY/BY) x 100 Where; HI = Harvest Index, EY = Economic Yield (grain yield), BY = Biological Yield ( ...

What is the importance of harvest index?

Harvest index helps to measure the difference between the potential and actual yield. It is the ratio between grain yield and plant yield. For each crop, it acts as an efficiency indicator. And it is different for each crop.

What is biological yield?

The biological yield refers to the total dry matter accumulation of a plant system. Improved harvest index represents increased physiological capacity to mobilize photosynthates and translocate them into organs having economic yield.

How is cropping intensity calculated?

It refers to raising of a number of crops from the same field during one agricultural year; it can be expressed through a formula. Cropping Intensity = Gross Cropped Area/Net Sown Area x 100.

What month do you harvest carrots?

Gardeners in warmer climates may be able to grow carrots through the winter by mulching them well, but in climates where the ground freezes and temperatures are consistently below 32 degrees Fahrenheit, it's best to harvest all carrot in late autumn.

Will carrots grow if tops are eaten?

Why do I have carrot tops but no carrots? Carrots are a long season crop, they take a lot of time to grow their tap roots. If the greens of the carrot were cut during the growing season, energy is misdirected back into foliar growth instead of root growth. Protect your carrot greens.

What happens if you leave carrots in the ground too long?

Lop the Tops Off

First, when carrot greens are left on, they continue to draw up energy from the roots. This results in vegetables that are not as sweet as they would have been otherwise. And because you are covering them, in more humid climates, your buried carrot greens will likely rot – ruining your crop.

Is maturity the same as ripening?

Maturation is indicative of the fruit being ready for harvest. At this point, the edible part of the fruit or vegetable is fully developed in size, although it may not be ready for immediate consumption. Ripening follows or overlaps maturation, rendering the produce edible, as indicated by taste.

What is the maturity index of banana?

Bananas ripened on the plant often split, have poor texture, and tend to be mealy, and therefore they are harvested mature-green and ripened at arrival to the market. The adequate maturity index for banana is the degree of fullness of the fingers, which is indicated by the disappearance of angulrity in a cross section.

What are the 5 factors for timely harvesting of fruits?

Answer: water content, respiratory rate,ethylene production,endogenous plant hormones,and exogenous factors such as microbial growth, temperature,relative humidity and atmospheric compositions.

When should I harvest my rice?

The crop should be cut when 80−85% of the grains are straw (i.e., yellow-colored). Generally, the ideal harvest time lies between 130 and 136 days after sowing for late, 113 and 125 for medium, and 110 days for early-maturing varieties. For dry season harvesting, an optimum time is 28 to 35 days after heading.

How do you calculate shelling percentage in maize?

The following formula: Grain weight=ear weight×shelling%×(1-moisture%)×1.176(at 15% moisture) Was set-up and applied on each sample in each of four replicates of each genotype. Regression and correlation coefficients were also determined.

What is economic yield?

Economic yield is basically a part or proportion of the biological yield or the dry matter generated from the crops. Therefore,economic yield provides economic benefits to the society as a whole and various communities within the society.