Review Questions in Crop Science

REVIEW QUESTIONS

IN

CROP

S C I E N CE

TOPICS: TOPIC S: LAND PREPARATION, PREPARATION, PLANTIN PLANTING G PRACT PRACTICES ICES AND WA WATER TER MGT.

1. From Corona’ Corona’s s classifcat classifcation, ion, this this type o climate climate is characteri characterized zed by having no dry season and has a very pronoun pronounced ced maximum rain period rom November to anuary. a! "ype # climate b! "y "ype ### climate

c! "ype ## climate d! "y "ype #$ climate

%. & hectare hectare o rice rice plants plants uses appr approx oximate imately ly ho' many many liters liters o 'ater or or its entire gro'th duration( a! about 1) million liters

c! about * million liters

b! about + million liters

d! about 1 million liters

. -ne o the ollo'ing is not a characteristic o a 'ellprepared upland feld/ a! pulverized

c! clean

b! puddled

d! organic matter

decomposed 0. ider plant spacing is adopted 'hen/ a! soil ertility is lo' b! plants have erect or vertical gro'th habit c! plant gro's into a big tree d! soil has 'ater holding capacity

*. #n arid places, the most economical means o irrigation method is/ a! overhead

c! drip

b! urro'

d! sprin2ler

3. hat is the approximate output o a healthy and mature human being in terms o horsepo'er( a! .%* 45

c! .*) 45

b! .1) 45

d! .) 45

6. 5rimary tillage is reerred to as/ a! harro'ing o the feld b! initial brea2ing o the soil

c! fxing o the levees d! puddling o the

soil +. "he ollo'ing actors increase the rate o evapotranspiration except/ a! lo' temperature

c! rapid air movement

b! lo' relative humididty

d! high temperature

7. #n a situation 'here a armer is running short o time, he should resort to raising seedlings by/ a! dapog method

c! drybed method

b! 'etbed method

d! any o the above

1). hich o the ollo'ing is not true( a! plenty o 'ater at germination period b! more and more 'ater applied up to 8o'ering time c! lesser amount o 'ater through the maturing period d! less amount o 'ater during ripening 11. 9irect seeding is commonly practiced in planting/ a! eggplant

c! corn

b! mango

d! tomato

1%. 5lanting system in orchards or plantation crops 'here one can have the a greater number o trees per unit area/ a! s:uare method

c! :uincunx method

b! contour system

d! hexagonal or

triangular system 1. "he main purpose o cultivation or intertillage/ a! improves 'ater infltration

c! enhances soil

aeration b! 'eed control

d! prevents excessive rise in temperature

10. & armer planted his onehectare corn feld 'ith .6* cm spacing bet'een ro's and .*) cm bet'een hills and seeding 'as maintained at % plants per hill. &pproximately 'hat is the plant population per hectare(

1*. #n tomato, poor drainage or 'aterlogging could result in the ollo'ing  

except/ a! production o adventitious roots

c! yello'ing o leaves

b! production o suc2ers

d! reduction o stem

gro'th 13. "he most common indices o the need or 'ater by crops except/ a! stage o the crop

c! surrounding vegetation

b! appearance o the crop

d! actual soil

moisture tests 16. "he ollo'ing are advantages o using straightro' transplanting in rice except/ a! optimum spacing is attained b! rotary 'eeders can be used or 'eeding c! easier to apply pesticides and herbicides d! seedlings gro' rapidly

1+.