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# What is exploitable yield gap?

## What is exploitable yield gap?

Therefore, average farm yields often begin to plateau when they reach 75 to 85% of Yp or Yw or Ypi, and the exploitable yield gap (Yg-E) is defined as the difference between 80% of Yp or Yw or Ypi and current average farm yields (Cassman et al., 2003; Lobell et al., 2009).

## How do you calculate yield gap?

Yield gap is calculated by subtracting achieved average yield from the yield potential (Lobell, Cassman, and Field, 2009). Understanding yield gap is very crucial for it can assist in crop yield predictions since yield potential shows the probable future productivity to be achieved.

How can yield gap be reduced?

For closing yield gaps, we need to implement various location specific agricultural input and management strategies. Adequate application of nutrients alone can increase crop calorie production by almost 20% whereas improvement of soil quality alone with adequate fertilizer application can generate an additional 30%.

### What is potential yield crop?

Crop yield potential is defined as the crop yield obtained when a crop is grown without limits on water or nutrients and in the absence of any pests, diseases, and weeds.

### Why is yield gap important?

First, yield gap analysis provides the foundation for identifying the most important crop, and soil and management factors limiting current farm yields and improved practices to close the gap. Second, to enable effective prioritization of research, development, and interventions.

What is a good yield chemistry?

According to the 1996 edition of Vogel’s Textbook , yields close to 100% are called quantitative, yields above 90% are called excellent, yields above 80% are very good, yields above 70% are good, yields above 50% are fair, and yields below 40% are called poor.

## What is actual yield in crop production?

The actual yield is determined by dividing total production (which includes harvested and appraised production) by planted acres for annual crops or by insurable acres for perennial crops.” …

## Why should we close the yield gap?

Closing the yield gap is vital to all of us because future global food security depends on producing enough nutritious food for a world population expected to peak at over 9 billion people by 2050. At the same time we must also protect our carbon-rich and bio-diverse forests, wetlands, and grasslands.

What causes yield gap in agriculture?

The yield gaps are mainly caused by biological, socio-economic, climate and institutional/policy related factors.

### Is the major determinant of crop yield?

The major factors affecting crop growth and development are radiation, temperature (yield determining), water, nutrition (yield limit- ing), and pests and diseases (yield reducing) (Van Ittersum and Rabbinge, 1997).

### How do you calculate crop yield potential?

Count the number of grains in at least 20 heads or pods and average (B) Using Table 1 determine the grain weight for the crop concerned (C) Yield in t/ha = (A × B × C) / 10,000.

What is yield potential and yield gap?

Yield Potential and Yield Gaps. Yield potential is defined as the yield of a crop cultivar when grown in environments to which it is adapted, with nutrients and water non-limiting, and pests and diseases effectively controlled (Evans, 1993).

## What is the yield potential of a Yatt?

Water-limited yield potential (Yw; blue solid line), attainable yield (Yatt; green solid line), average actual yields (solid triangles), and exploitable yield gaps (red arrows) are shown. The Yatt was estimated as 70% of Yw at a given age.

## How do you increase the yield potential of a crop?

To achieve yield potential, the crop must be optimally supplied with water and nutrients and completely protected against weeds, pests, diseases, and other factors that may reduce growth.