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<br />
<br />TABLE 2
<br />
<br />;'...." .....'.'...,:
<br />':;'.;,., -~.,::" ..".-
<br />
<br />.~.;
<br />
<br />J.n. RHOADES ET AL.
<br />
<br />Amounts (mm) of Colorado and Alamo River waters used for irrigation in the "successive" crop
<br />rotation
<br />
<br />.....,.
<br />
<br />~t::i~~:~>,~:;;~,:;'~~~.;~~~ii:~h:
<br />
<br />Treat- 1982 Wheat
<br />menta
<br />
<br />1984 Wheat
<br />
<br />
<br />. .:~
<br />
<br />.....
<br />
<br />% Alamo R.
<br />
<br />% Alamo R. Colo. R. Alamo R. Total
<br />
<br />Colo. R. Alamo R. Total
<br />
<br />.:;.".> .: :":':'
<br />
<br />C
<br />Ca
<br />eA
<br />
<br />548(3)'
<br />417(5)
<br />131(1)
<br />
<br />548(3)
<br />545(4)
<br />556(4)
<br />
<br />823(4)
<br />431(2)
<br />307(2)
<br />
<br />o
<br />396(2)
<br />526(2)
<br />
<br />823(4)
<br />827(2)
<br />833(3)
<br />
<br />".....;.;
<br />
<br />o
<br />48
<br />63
<br />
<br />o
<br />24
<br />76
<br />
<br />,.:. ,......
<br />./.-. '.-:."
<br />
<br />
<br />o
<br />129(1)
<br />425(4)
<br />
<br />.......-;.
<br />
<br />1983 Sugar beets
<br />
<br />1985 Sugar heets
<br />
<br />:-!~:.
<br />
<br />." .:,"
<br />
<br />.... ''',',
<br />
<br />',-."
<br />
<br />.......
<br />
<br />. .
<br />....... .
<br />......... "
<br />. ~ .
<br />
<br />Colo. R. Alamo R. Total
<br />
<br />% Alamo R. Colo. R. Alamo R. Total
<br />
<br />% Alamo R.
<br />
<br />. .',-:".
<br />
<br />..
<br />.......
<br />'.
<br />..
<br />;. ...
<br />.. . .'.
<br />
<br />.'- ""'.
<br />.-
<br />
<br />C
<br />Ca
<br />eA
<br />
<br />1268(5)
<br />712(1 )
<br />448(3)
<br />
<br />o
<br />536(2)
<br />800(3)
<br />
<br />1268(5)
<br />1249(2)
<br />1248(4)
<br />
<br />1400(4)
<br />711 (3)
<br />491(2 )
<br />
<br />o
<br />663(3)
<br />873(4)
<br />
<br />1400(4) 0
<br />1374(5) 48
<br />1364(4) 64
<br />
<br />.....
<br />
<br />o
<br />43
<br />64
<br />
<br />: .;"' ," . .: _: ~
<br />
<br />..........;..
<br />
<br />1983 Cantaloupes
<br />
<br />1985 Cantaloupes
<br />
<br />Colo. R. Alamo R. Total
<br />
<br />Colo. R. Alamo R. Total
<br />
<br />C
<br />Ca
<br />eA
<br />
<br />626(7) 0
<br />623(2) 0
<br />628(3) 0
<br />
<br />626(7)
<br />623(2)
<br />628(3)
<br />
<br />360(6) 0
<br />354(4) 0
<br />346(4) 0
<br />
<br />360(6)
<br />354(4)
<br />346(4)
<br />
<br />. .. '.., ~~'~." .:<.:. :<-;". ".: -t..~ : .:::..: ':~.'. :.
<br />..:..... ;',
<br />
<br />\.~..~:. ":'-';"
<br />
<br />Complete rotation
<br />
<br />~:'~ ~;., '.":-':, .::.::.::, ;.:-~:..~...:".::'::>:~~)
<br />.....:.~.~.':.~:.;>.:..; . .'': .'.: .., .'
<br />. '.'.
<br />:.";:;".,.':
<br />
<br />'. ...~.",:-:.
<br />
<br />Colo. R. Alamo R. Total
<br />
<br />% Alamo R.
<br />
<br />e
<br />Ca
<br />eA
<br />
<br />5025(12)
<br />3248(9)
<br />2351(7)
<br />
<br />o
<br />1724(5)
<br />2624(3)
<br />
<br />5025(12) 0
<br />4971(11) 35
<br />4975(10) 53
<br />
<br />BC;;;:: Colorado River water and solely for irrigation; Alamo River water used for irrigation in rei.'
<br />atively smaller (Ca) and larger (eA) amounts.
<br />bNumber in parentheses is standard error of mean.
<br />
<br />:):\::::'.:'..,.:,::':..::.
<br />
<br />.'~'
<br />
<br />5 and 6, respectively_ No significant yield losses occurred for the wheat and
<br />sugarbeet crops in either cycle of the "successive" rotation from substituting
<br />drainage water for Colorado River water after seedling establishment (even in
<br />the greater amount; 65-75%, treatment cA). The mean yield of cantaloupe
<br />seed obtained in the cA treatment plots was about 10% lower than the control,
<br />but the difference was not statistically significant. The yields of the fresh-
<br />market melons (numbers of cartons of cantaloupes obtained by commercial
<br />harvest operations) in 1985 were higher in the Ca and cA treatments than in
<br />the C treatment, but they were not significantly different (see Table 5). Hence,
<br />
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